Patent Description:
An ultrasonic imaging apparatus is medical equipment of irradiating ultrasonic signals toward a target inside an object from the surface of the object, and receiving ultrasonic signals (that is, ultrasonic echo signals) reflected from the target so as to non-invasively acquire slice images about soft tissue of the object or images about blood vessels of the object based on information of the ultrasonic echo signals.

The ultrasonic imaging apparatus has advantages that it is a compact, low-priced apparatus compared to other medical imaging apparatuses, such an X-ray imaging apparatus, a Computerized Tomography (CT) scanner, a Magnetic Resonance Image (MRI) apparatus, and a nuclear medicine diagnosis apparatus, and it can display images in real time. Also, the ultrasonic imaging apparatus has high safety since there is no risk for patients to be exposed to radiation. For the advantages, the ultrasonic imaging apparatus is widely used to diagnose the heart, breasts, abdomen, urinary organs, uterus, etc..

Particularly, in obstetrics and gynecology, the ultrasonic imaging apparatus is used to check the number of follicles in a uterus in order to diagnose polycystic ovary syndrome which is one cause of sterility.

The <CIT> relates to an ultrasound diagnostic apparatus and a volume data processing method, and more particularly to specification or measurement of an object tissue within a three-dimensional space.

The <CIT> provides an ultrasonic diagnostic apparatus and a method of carrying out a measurement using the apparatus.

The <CIT> refers to systems and methods for real-time capture and display of medical ultrasound images and more particularly to real-time capture and display of multi-slice of medical ultrasound images of a volumetric region while maintaining an acceptable frame rate.

Therefore, it is an aspect of the present disclosure to provide an ultrasonic imaging apparatus for successively displaying a plurality of slice images of an object at predetermined frame rate, and a control method of the ultrasonic imaging apparatus.

Regarding the method of controlling an ultrasonic imaging apparatus the invention is defined by claim <NUM>.

The display unit may highlight the extracted target in the plurality of slice images of the object.

The display unit may display the region of interest as a section in the plurality of slice images.

The display unit may successively display a plurality of slice images of the object for an entire section of the object, the entire section of the object decided by the volume data of the object, and if a slice image being currently displayed includes the region of interest, the display unit may stop successively displaying the plurality of slice images of the object for the entire section of the object.

After stopping successively displaying the plurality of slice images of the object for the entire section of the object, the display unit may successively display a plurality of slice images of the object for a section of interest that is decided by the region of interest.

The controller may determine the region of interest based on a size of the extracted target.

The controller may determine, as the region of interest, a region satisfying a predetermined condition in the remaining area of the object not extracted as the target.

The display unit may display the plurality of slice images of the object, including the region of interest, at the same time.

The ultrasonic imaging apparatus may further include an input unit configured to receive at least one command of a command for determining the region of interest as the target, and a command for cancelling the extracted target.

The display unit may successively display a plurality of first slice images of the object, including the region of interest, wherein the plurality of first slice images may be perpendicular to a predetermined first direction.

The display unit may mark a position of a first slice image being currently displayed, in a second slice image of the object, wherein the second slice image of the object may be perpendicular to a second direction being perpendicular to the first direction.

The display unit may mark the position of the first slice image being currently displayed, in a third slice image of the object, wherein the third slice image of the object may be perpendicular to a third direction being perpendicular to the first direction and the second direction.

The display unit may mark a position of a slice image being currently displayed, in a 3Dimensional (3D) image of the object.

The successively displaying of the plurality of slice images of the object, including the region of interest, may include highlighting the extracted target in the plurality of slice images of the object.

The successively displaying of the plurality of slice images of the object, including the region of interest, may include displaying the region of interest as a section in the plurality of slice images.

The method may further include: successively displaying a plurality of slice images of the object for an entire section of the object, the entire section of the object decided by the volume data of the object, and if a slice image being currently displayed includes the region of interest, stopping successively displaying the plurality of slice images of the object for the entire section of the object.

The successively displaying of the plurality of slice images of the object, including the region of interest, may include, after stopping successively displaying the plurality of slice images of the object for the entire section of the object, successively displaying a plurality of slice images of the object for a section of interest that is decided by the region of interest.

The determining of the region of interest in the object may include determining the region of interest based on a size of the extracted target.

The determining of the region of interest in the object may include determining, as the region of interest, a region satisfying a predetermined condition in the remaining area of the object not extracted as the target.

The method may further include displaying the plurality of slice images of the object, including the region of interest, at the same time, according to an input from a user.

The method may further include determining the region of interest as the target or cancelling the extracted target, according to an input from a user.

The successively displaying of the plurality of slice images of the object, including the region of interest, may include successively displaying a plurality of first slice images of the object, including the region of interest, wherein the plurality of first slice images may be perpendicular to a predetermined first direction.

The successively displaying of the plurality of slice images of the object, including the region of interest, may include marking a position of a first slice image being currently displayed, in a second slice image of the object, wherein the second slice image of the object may be perpendicular to a second direction being perpendicular to the first direction.

The successively displaying of the plurality of slice images of the object, including the region of interest, may include marking the position of the first slice image being currently displayed, in a third slice image of the object, wherein the third slice image of the object may be perpendicular to a third direction being perpendicular to the first direction and the second direction.

The successively displaying of the plurality of slice images of the object, including the region of interest, may include marking a position of a slice image being currently displayed, in a 3Dimensional (3D) image of the object.

Reference will now be made in detail to the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

Hereinafter, an ultrasonic imaging apparatus and a control method thereof according to embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

In the following description, an "ultrasound image" means an image of an object acquired using ultrasonic waves. Also, the "object" means a human body, an animal, a metal, a nonmetal, or a part thereof. For example, the object may include vessels or organs, such as a liver, a heart, a uterus, a brain, breasts, abdomen, etc. Also, the object may include a phantom, and the phantom means a material having a volume that is very close to an effective atomic number and a density of a living body.

Also, in the following description, a "target" may be a part of an object, which a user wants to examine through an ultrasound image.

Also, in the following description, a "user" may be a medical professional, such as a doctor, a nurse, a medical technologist, or a medical imaging professional, or may be a technician that repairs medical equipment, although not limited to them.

<FIG> is a perspective view of an ultrasound imaging apparatus according to an embodiment of the present disclosure. Referring to <FIG>, the ultrasound imaging apparatus may include a main body <NUM>, an ultrasound probe <NUM>, an input unit <NUM>, and a display unit <NUM>.

In one side of the main body <NUM>, one or more female connectors <NUM> may be provided. A male connector <NUM> connected to a cable <NUM> may be physically coupled with one of the female connectors <NUM>.

Meanwhile, at the bottom of the main body <NUM>, a plurality of castors (not shown) may be provided to move the ultrasound imaging apparatus. The plurality of castors may fix the ultrasound imaging apparatus at a specific location or move the ultrasound imaging apparatus in a specific direction. The ultrasound imaging apparatus is called a cart-type ultrasound imaging apparatus.

However, the ultrasound imaging apparatus may be a portable ultrasound imaging apparatus that can be possessed by a user even when he/she moves to a long distance. The portable ultrasound imaging apparatus may not include castors. Examples of such a portable ultrasound imaging apparatus include a Picture Archiving and Communication System (PACS) viewer, a smart phone, a laptop computer, PDA, and a tablet PC, although not limited to these.

The ultrasound probe <NUM> may contact the surface of an object to transmit and receive ultrasonic waves. More specifically, the ultrasound probe <NUM> may transmit ultrasonic waves to the inside of an object according to a transmission signal received from the main body <NUM>, receive echo ultrasonic waves reflected from a specific part inside the object, and then transfer the received echo ultrasonic waves to the main body <NUM>.

The ultrasound probe <NUM> may be connected to one end of the cable <NUM>, and the other end of the cable <NUM> may be connected to the male connector <NUM>. The male connector <NUM> connected to the other end of the cable <NUM> may be physically coupled with the female connector <NUM> of the main body <NUM>.

Alternatively, the ultrasound probe <NUM> may be connected to the main body <NUM> in a wireless fashion. In this case, the ultrasound probe <NUM> may transmit echo ultrasonic waves received from an object to the main body <NUM> in the wireless fashion. Also, a plurality of ultrasound probes may be connected to the main body <NUM>.

Meanwhile, in the main body <NUM>, an image processor <NUM> (see <FIG>) for converting echo ultrasonic waves received from the ultrasound probe <NUM> into an ultrasound image may be provided. The image processor <NUM> may be implemented in the form of hardware such as a microprocessor, or in the form of software that can be executed on hardware.

The image processor <NUM> may perform scan conversion on echo ultrasonic waves to create an ultrasound image. The ultrasound image may be a gray sale image acquired by scanning an object in Amplitude mode (A-mode), Brightness mode (B-mode) or Motion mode (M-mode), or a Doppler image that represents a moving object using the Doppler effect. The Doppler image may include a blood flow Doppler image (or called a color Doppler image) showing flow of blood, a tissue Doppler image showing movement of a tissue, and a spectral Doppler image showing moving speed of an object as a waveform.

The image processor <NUM> may extract B-mode components from echo ultrasonic waves received by the ultrasound probe <NUM> in order to create a B-mode image. The image processor <NUM> may create an ultrasound image in which intensity of echo ultrasonic waves is represented to be bent, based on the B-mode components.

Likewise, the image processor <NUM> may extract Doppler components from echo ultrasonic waves, and create a Doppler image in which movement of an object is represented as a color or waveform, based on the Doppler components.

Also, the image processor <NUM> may perform volume rendering on volume data acquired through echo ultrasonic waves to create a 3Dimensional (3D) ultrasound image, or create an elastic image resulting from imaging a degree of deformation of an object according to pressure. In addition, the image processor <NUM> may represent various additional information in the form of text or graphic images on the ultrasound image.

Meanwhile, the ultrasound image may be stored in an internal memory of the main body <NUM> or in an external memory. Alternatively, the ultrasound image may be stored in a web storage or a cloud server that performs a storage function on the web.

The input unit <NUM> is used to receive commands related to operations of the ultrasound imaging apparatus. For example, the input unit <NUM> may receive a mode selection command for selecting a mode, such as an A mode, a B mode, a M mode, or a Doppler mode. Also, the input unit <NUM> may receive a diagnosis start command.

A command input through the input unit <NUM> may be transferred to the main body <NUM> through wired/wireless communication.

The input unit <NUM> may include at least one of a keyboard, a foot switch, and a foot pedal. The keyboard may be hardwarily implemented, and disposed on the upper part of the main body <NUM>. The keyboard may include at least one(s) of a switch, keys, a joystick, and a trackball. As another example, the keyboard may be softwarily implemented as a graphic user interface (GUI). In this case, the keyboard may be displayed through a sub display unit <NUM> or a main display unit <NUM>. The foot switch or the foot pedal may be provided in the lower part of the main body <NUM>, and a user may control operations of the ultrasonic imaging apparatus using the foot pedal.

The display unit <NUM> may include the main display unit <NUM> and the sub display unit <NUM>.

The sub display unit <NUM> may be mounted on the main body <NUM>. In <FIG>, the sub display unit <NUM> is provided over the input unit <NUM>. The sub display unit <NUM> may display an application related to operation of the ultrasonic imaging apparatus. For example, the sub display unit <NUM> may display menus or guidance needed for ultrasonic diagnosis. The sub display unit <NUM> may be, for example, a Cathode Ray Tube (CRT) or a Liquid Crystal Display (LCD).

The main display unit <NUM> may be also mounted on the main body <NUM>. In <FIG>, the main display unit <NUM> is positioned over the sub display unit <NUM>. The main display unit <NUM> may display ultrasonic images acquired during ultrasonic diagnosis according to an input received through the input unit <NUM>. Like the sub display unit <NUM>, the main display unit <NUM> may also be, for example, a CRT or a LCD. In <FIG>, the main display unit <NUM> is coupled with the main body <NUM>, however, the main display unit <NUM> may be removably coupled with the main body <NUM>.

Also, in <FIG>, a case in which the ultrasonic imaging apparatus includes both the main display unit <NUM> and the sub display unit <NUM> is shown, however, the sub display unit <NUM> may be omitted. In this case, an application, a menu, etc., which are displayed through the sub display unit <NUM>, may be displayed through the main display unit <NUM>.

Meanwhile, the ultrasound imaging apparatus may further include a communication unit. The communication unit may connect to a network in a wired/wireless fashion to communicate with an external device or a server. The communication unit may receive/transmit data from/to a hospital server or other medical apparatuses in a hospital, connected through Picture Archiving and Communication System (PACS). Also, the communication unit may perform data communication according to a Digital Imaging and Communications in Medicine (DICOM) standard.

The communication unit may transmit/receive data related to diagnosis of an object, such as an ultrasound image, echo ultrasonic waves, and Doppler data of the object, through the network. Also, the communication unit may transmit/receive medical images photographed by another medical apparatus, such as a CT scanner, a MRI apparatus, an X-ray apparatus, etc., through the network. In addition, the communication unit may receive information about a patient's diagnosis history, therapeutic schedule, etc., from a server, and use the information for diagnosis of an object. Furthermore, the communication unit may perform data communication with a doctor's or patient's mobile terminal, as well as a server or a medical apparatus in a hospital.

The communication unit may connect to the network in a wired/wireless fashion to receive/transmit data from/to a server, a medical apparatus, or a mobile terminal. The communication unit may include one or more components to enable communications with external devices, and may include a short-range communication module, a wired communication module, and a mobile communication module.

The short-range communication module may be a module for short-range communication within a predetermined distance. The short-range communication may be Wireless LAN (WLAN), Wireless-Fidelity (Wi-Fi), Bluetooth, Zigbee, Wi-Fi Direct (WFD), Ultra Wideband (UWB), Infrared Data Association (IrDA), Bluetooth Low Energy (BLE), or Near Field Communication (NFC), although the short-range communication is not limited to these.

The wired communication module may be a module for communication based on electrical signals or optical signals, and may be a pair cable, a coaxial cable, an optical fiber cable, or an Ethernet cable.

The mobile communication module may transmit/receive radio signals from/to at least one of a base station, an external terminal, and a server over a mobile communication network. Herein, the radio signals may include voice call signals, video call signals, or various kinds of data according to text/multimedia message transm ission/reception.

<FIG> is a control block diagram of an ultrasonic imaging apparatus according to an embodiment of the present disclosure;
Referring to <FIG>, an ultrasonic imaging apparatus according to an embodiment of the present disclosure may include an ultrasound probe <NUM> configured to transmit and receive ultrasonic waves to acquire volume data of an object; an image processor <NUM> configured to create an ultrasound image of the object based on the volume data of the object; a display unit <NUM> configured to display the ultrasound image; an input unit <NUM> configured to receive a control command from a user; and a controller <NUM> configured to control overall operations of the ultrasonic imaging apparatus.

The ultrasound probe <NUM> may irradiate ultrasonic signals to an object, and receive echo ultrasonic waves reflected from the object. Since ultrasonic waves are reflected with different degrees of reflectance according to medium, the ultrasound probe <NUM> may acquire information about the inside of an object by collecting echo ultrasonic waves reflected from the object.

The ultrasound probe <NUM> may be implemented in various ways within the technical concept of acquiring volume data of an object. For example, if the transducer elements of the ultrasound probe <NUM> has a <NUM> Dimensional (1D) arrangement, the ultrasound probe <NUM> may acquire volume data according to a freehand method. Also, the ultrasound probe <NUM> may acquire volume data according to a mechanical method, without having to receive a user's manipulation. If the transducer elements of the ultrasound probe <NUM> have a 2Dimensional (2D) arrangement, the ultrasound probe <NUM> may acquire volume data by controlling the transducer elements.

The image processor <NUM> may create an ultrasound image of the object using the volume data of the object. At this time, the image processor <NUM> may create 3D ultrasound images of the object, as well as 2D ultrasound images about sections of the object.

In order to create a 3D ultrasound image, the image processor <NUM> performs volume rendering on the volume data. The image processor <NUM> may volume-render the 3D volume data using one of volume rendering methods well-known in the art. In detail, volume rendering may be classified into surface rendering and direct volume rendering.

The surface rendering is to extract surface information from volume data based on predetermined scalar values and amounts of spatial changes, to convert the surface information into a geometric factor, such as a polygon or a surface patch, and then to apply a conventional rendering technique to the geometric factor. Examples of the surface rendering are a marching cubes algorithm and a dividing cubes algorithm.

The direct volume rendering is to directly render volume data without converting volume data into a geometric factor. The direct volume rendering is useful to represent a translucent structure since it can visualize the inside of an object as it is. The direct volume rendering may be classified into an object-order method and an image-order method according to a way of approaching volume data.

The image-order method is to sequentially decide pixel values of an image. An example of the image-order method is volume ray casting. The object-order method is to directly project volume data on an image. An example of the object-order method is splatting.

Also, the image processor <NUM> may extract a target from volume data. For example, if an object is a human's uterus and targets are follicles in the uterus, the image processor <NUM> may extract follicles using volume data.

The image processor <NUM> may be implemented in various ways within the technical concept of extracting a target inside an object based on volume data. For example, the image processor <NUM> may extract, as a target, a volume data region having brightness values that are within a predetermined range. Also, the image processor <NUM> may extract a target by determining whether or not the size of a volume data region having predetermined brightness values is within a predetermined range.

The display unit <NUM> may display the ultrasound image created by the image processor <NUM>. More specifically, the display unit <NUM> may display a slice image or a 3D image of the object created by the image processor <NUM>, or may display the slice image and the 3D image of the object together.

At this time, the display unit <NUM> may highlight a target extracted from the slice image being displayed. For example, the display unit <NUM> may change the color or shade of an area corresponding to the target, or may change the color or shade of the boundary line of the area corresponding to the target. Alternatively, the display unit <NUM> may display a marker indicating a location of the area corresponding to the target.

Hereinafter, a method in which the display unit <NUM> displays ultrasound images under the control of the controller <NUM> will be described in detail.

The controller <NUM> may control the display unit <NUM> to successively display a plurality of slice images of an object for an entire section of the object decided by volume data of the object. The display unit <NUM> may successively display a plurality of slice images of the object for the entire section of the object, at predetermined frame rate, under the control of the controller <NUM>.

Herein, the entire section of the object means a section of the object that can be displayed as slice images by acquired volume data. A distance between two successive slice images of the object and the predetermined frame rate may be decided by a user's input or by the internal computation of the ultrasonic imaging apparatus.

As such, by displaying a plurality of slice images of the object for the entire section of the object, information about the inside of the object can be provided to a user, and also by scanning the inside of the object, the user can determine a region of interest which will be described.

Hereinafter, a method of displaying a plurality of slice images of an object for an entire section of the object will described.

<FIG> are views for describing an embodiment of a method of successively displaying a plurality of slice images of an object for an entire section of the object, in an ultrasonic imaging apparatus according to an embodiment of the present disclosure.

Hereinafter, for convenience of description, a direction in which ultrasonic waves are irradiated to an object is assumed to be a z-axis direction, and directions which are perpendicular to the z-axis direction and which are perpendicular to each other are assumed to be an x-axis direction and a y-axis direction. Specifically, in a 1D array probe, a direction in which elements are aligned is assumed to be an x-axis direction, and in a 2D array probe, a direction in which elements are arranged is assumed to be an x-axis direction, and another direction in which the elements are arranged is assumed to be a y-axis direction.

Also, the z-axis direction is assumed to be a first direction, the x-axis direction is assumed to be a second direction, and the y-axis direction is assumed to be a third direction.

Referring to <FIG>, the controller <NUM> may control the display unit <NUM> to successively display a plurality of slice images of an object, which are perpendicular to a predetermined first direction, for an entire section of the object. More specifically, the controller <NUM> may control the display unit <NUM> to successively display a plurality of slice images (also referred to as a plurality of first slice images) of an object, which are perpendicular to a first direction, at predetermined frame rate.

Referring to <FIG>, the display unit <NUM> may successively display a plurality of first slice images. In the respective first slice images, the same target is represented by different areas with different boundary lines. Accordingly, a user can easily recognize a shape and size of the target.

Meanwhile, the controller <NUM> may control the display unit <NUM> to successively mark positions of the plurality of first slice images respectively in a plurality of slice images (also referred to as a plurality of second slice images) of the object, the second slice images being perpendicular to a second direction.

Referring to <FIG>, the display unit <NUM> may display the second slice images to the right of the first slice images, wherein the second slice images are parallel to the yz plane. More specifically, the display unit <NUM> may display a marker indicating a position of a first slice image being currently displayed, in a second slice.

With elapse of time from <FIG>, as the first slice images are successively changed and displayed at the predetermined frame rate, the locations of markers displayed in the second slice images are also changed.

As such, by successively displaying the first slice images and simultaneously providing the second slice images in which the positions of the first slice images are respectively marked, the display unit <NUM> can help a user accurately recognize a location and shape of the target.

In addition, the controller <NUM> may control the display unit <NUM> to successively display a plurality of slice images (also referred to as a plurality of third slice images) which are perpendicular to a third direction and in which the positions of the plurality of first slice images are respectively marked.

Referring to <FIG>, the display unit <NUM> may display the third slice images below the first slice images, wherein the third slice images are parallel to the zx plane. More specifically, the display unit <NUM> may display a marker indicating a position of a first slice image being currently displayed, in a third slice.

With elapse of time from <FIG>, as the first slice images are successively changed and displayed at the predetermined frame rate, the locations of markers displayed in the third slice images are also changed.

<FIG> are views for describing another embodiment of a method of successively displaying a plurality of slice images of an object for an entire section of the object, in an ultrasonic imaging apparatus according to an embodiment of the present disclosure.

Unlike the embodiment shown in <FIG>, the controller <NUM> may control the display unit <NUM> to successively display a plurality of slice images of an object, which are perpendicular to a second direction, for an entire section of the object. More specifically, the controller <NUM> may control the display unit <NUM> to successively display a plurality of slice images (also referred to as a plurality of second slice images) of an object, which are parallel to the yz plane being perpendicular to the x-axis, at predetermined frame rate.

Also, the controller <NUM> may control the display unit <NUM> to display a first slice image or a third slice image in which a marker indicating a position of a second slice image being currently displayed is displayed.

Referring to <FIG>, the display unit <NUM> may successively display the second slice images at predetermined frame rate. Simultaneously, the display unit <NUM> may display a plurality of first slice images and a plurality of third slice images in which the positions of the second slice images being successively displayed are marked.

As such, by successively providing a plurality of slice images of a target acquired in various directions, and marking the position of each slice image in the other slice images, the display unit <NUM> can help a user accurately recognize a shape and location of the target.

The controller <NUM> may control the display unit <NUM> to successively display positions of a plurality of slice images of an object respectively in a plurality of 3D images of the object, for the entire section of the object.

For example, the controller <NUM> may control the display unit <NUM> to successively display a plurality of first slice images of an object at predetermined frame rate, while successively displaying positions of the first slice images being currently displayed, respectively, in a plurality of 3D images of the object. More specifically, the controller <NUM> may display a marker indicating a position of a first slice image of an object being displayed on the display unit <NUM>, in a 3D image of the object.

As a result, the display unit <NUM> may successively display the plurality of first slice images of the object at the predetermined frame rate, and simultaneously display a plurality of 3D images of the object in which the positions of the first slice images are marked, as shown in <FIG>.

In <FIG>, a case in which a plurality of first slice images of an object are successively displayed is shown, however, a plurality of second or third slice images of an object may be successively displayed together with a plurality of 3D images of the object. Alternatively, at least two kinds of slice images among first slice images, second slice images, and third slice images of an object may be displayed together with 3D images of the object.

As such, by marking a position of a target slice image being displayed in a 3D image of the target, the display unit <NUM> can help a user accurately recognize a shape and location of the target.

Also, when the display unit <NUM> displays a plurality of slice images for an entire section of an object, the display unit <NUM> may detect a region of interest from a slice image. At this time, the controller <NUM> may control the display unit <NUM> to stop successively displaying the plurality of slice images for the entire section of the object.

The controller <NUM> may determine the region of interest based on targets extracted by the image processor <NUM> (see <FIG>). The region of interest may be a region that needs to be additionally examined by a user in the extracted targets or the other area.

For example, the controller <NUM> may determine a target satisfying a predetermined condition among the extracted targets, as a region of interest. If the extracted targets are follicles, the controller <NUM> may determine the largest target among the extracted targets as a region of interest so that a user can examine the largest follicle among the extracted follicles.

As another example, the controller <NUM> may determine a region satisfying a predetermined condition in the remaining area not extracted as targets, as a region of interest. When follicles are extracted as targets, there may be a follicle not extracted through volume data. The controller <NUM> may determine a region satisfying a predetermined condition from a slice image, as a region of interest, to allow a user to determine whether or not the region of interest is a follicle.

The predetermined condition for determining a region of interest may have been decided in advance by a user's input or by the internal computation of the ultrasonic imaging apparatus.

<FIG> and <FIG> are views for describing an embodiment of a method of stopping successively displaying a plurality of slice images in an ultrasonic imaging apparatus according to an embodiment of the present disclosure. In the embodiment as shown in <FIG> and <FIG>, a region of interest is assumed to be a region satisfying a predetermined condition in an area not extracted as a target.

As described above with reference to <FIG>, the display unit <NUM> may successively display a plurality of first slice images for an entire section of an object, at predetermined frame rate. At this time, if a first slice image includes a region of interest, the display unit <NUM> may stop successively displaying the plurality of first slice images in order to keep displaying the first slice image including the region of interest.

For example, referring to <FIG>, the display unit <NUM> may successively display a plurality of first slice images. At this time, if a first slice image displayed on the display unit <NUM> includes a region of interest, the display unit <NUM> may stop successively displaying the plurality of first slice images to keep displaying the first slice image including the region of interest.

In <FIG>, a region of interest is assumed to be a region satisfying a predetermined condition in an area not extracted as a target.

Since the display unit <NUM> keeps displaying the first slice image including the region of interest, a user can determine whether there is a target not extracted by the image processor <NUM>.

After the display unit <NUM> stops successively displaying the plurality of slice images of the object for the entire section of the object, the controller <NUM> may control the display unit <NUM> to successively display a plurality of slice images of the object for a section of interest that is decided by the region of interest.

A distance between two successive slice images of the object and the predetermined frame rate may be decided by a user's input or by the internal computation of the ultrasonic imaging apparatus.

<FIG> and <FIG> are views for describing an embodiment of a method of displaying a plurality of slice images including a region of interest in an ultrasonic imaging apparatus according to an embodiment of the present disclosure.

As described above, if a slice image displayed on the display unit <NUM> includes a region of interest, the controller <NUM> may control the display unit <NUM> to stop successively displaying a plurality of slice images. As a result, the display unit <NUM> may keep displaying the slice image including the region of interest that needs to be examined.

In <FIG>, a slice image including a region of interest, displayed on the display unit <NUM>, is shown. Since the region of interest is a region that needs to be examined by a user, the display unit <NUM> needs to provide the user with a lot of information about the region of interest.

Accordingly, the controller <NUM> may control the display unit <NUM> to display a plurality of slice images for a section of interest S that is decided by the region of interest. Herein, the section of interest S may be a section decided in advance to provide slice images of the region of interest. After determining the region of interest, the controller <NUM> may set a section of interest S based on boundary lines of the region of interest.

As shown in <FIG>, the display unit <NUM> may successively display a plurality of slice images of the object for the section of interest S, under the control of the controller <NUM>.

Thereby, the display unit <NUM> may provide the user with information about a shape and size of the region of interest. Even when a region of interest is determined from an area not exacted as a target, if the display unit <NUM> displays a plurality of slice images including the region of interest, the user can determine whether the region of interest corresponds to a target.

<FIG> is a view for describing another embodiment of a method of displaying a plurality of slice images including a region of interest in an ultrasonic imaging apparatus according to an embodiment of the present disclosure.

<FIG> and <FIG> show a case in which the display unit <NUM> successively displays a plurality of slice images including a region of interest, however, the display unit <NUM> can display a plurality of slice images including a region of interest on one screen.

According to the embodiment of <FIG>, the display unit <NUM> can provide a plurality of slice images including a region of interest simultaneously to a user. In this case, since the user can examine a plurality of slice images acquired in various directions at the same time, he/she can compare the features of images of interest at different positions.

After the plurality of slice images including the region of interest are provided to the user, as described above, the input unit <NUM> may receive at least one of a command for determining the region of interest as a target and a command for canceling an extracted target, from the user.

<FIG> are views for describing an embodiment of a method of adding a target in an ultrasonic imaging apparatus according to an embodiment of the present disclosure.

In the embodiment of <FIG>, a region of interest may be a region satisfying a predetermined condition in an area not extracted as a target.

<FIG> shows a slice image including a region of interest, which is one of slice images being successively displayed on the display unit <NUM>. A user may examine the slice image to determine whether the region of interest is a target.

If the user determines that the region of interest is a target, the user may input a command for determining a region of interest as a target through the input unit <NUM>. For example, as shown in <FIG>, the input unit <NUM> may receive a command for selecting a region of interest.

According to the command from the user, the image processor <NUM> may filter and label the slice image including the region of interest to extract the region of interest determined as a target. <FIG> shows an image acquired by filtering the slice image including the region of interest, and <FIG> shows an image acquired by labeling the filtered slice image. Also, <FIG> shows an image acquired by deleting regions previously extracted as targets from the labeled regions.

As a result, the display unit <NUM> may highlight the region of interest newly determined as a target, and display the highlighted, region of interest in the corresponding slice image. For example, the display unit <NUM> may highlight the boundary line of the region of interest newly determined as a target.

As such, since a region of interest can be added as a target according to a user's input in addition to targets automatically extracted by the image processor <NUM>, the ultrasonic imaging apparatus can provide an environment for more accurate diagnosis.

Meanwhile, the image processor <NUM> may delete at least one target from extracted targets according to a user's input. If a user inputs a command for cancelling at least one target among extracted targets, the display unit <NUM> may remove the highlight of the corresponding target.

The above description is given under the assumption that volume data of an object is acquired in real time by the ultrasound probe <NUM>, as shown in <FIG>. However, the ultrasonic imaging apparatus described above is exemplary, and the ultrasonic imaging apparatus may be implemented in various ways within the technical concept of providing volume data of an object to the image processor <NUM>. For example, volume data of an object stored in advance in the ultrasonic imaging apparatus may be provided to the image processor <NUM>, or volume data of an object stored in an external device may be provided to the image processor <NUM> through communication between the ultrasonic imaging apparatus and the external device.

<FIG> is a flowchart illustrating a method of controlling an ultrasonic imaging apparatus, according to an embodiment of the present disclosure.

First, ultrasonic waves may be transmitted and received to acquire volume data of an object, in operation <NUM>. At this time, an ultrasound probe may be used to acquire volume data of the object.

Then, one or more targets in the object may be extracted based on the volume data of the object, in operation <NUM>. Herein, the target may be a part of the object, which a user wants to examine through an ultrasound image. For example, if the object is a human's uterus, the target may be a follicle in the uterus.

A method of extracting a target inside an object based on volume data of the object may be at least one of well-known technologies. For example, a volume data area having brightness values in a predetermined brightness range may be extracted as a target. As another example, a target may be extracted by determining whether the size of a volume data area having predetermined brightness values is within a predetermined range.

Then, a region of interest in the object may be determined based on the extracted targets, in operation <NUM>. The region of interest may be a region that needs to be additionally examined by a user in the extracted targets or the other area.

For example, the region of interest may be a target satisfying a predetermined condition among the extracted targets. As another example, the region of interest may be a region satisfying a predetermined condition in the remaining area not extracted as the targets.

Finally, a plurality of slice images of the object, including the region of interest, may be successively displayed, in operation <NUM>. The plurality of slice images may be images about a plurality of sections of the object, which are perpendicular to a predetermined direction.

In this way, by extracting a region of interest automatically, and successively displaying a plurality of slice images including the region of interest, the ultrasonic imaging apparatus can help a user diagnose the region of interest.

Therefore, according to an aspect of the ultrasonic imaging apparatus and the control method thereof as described above, a plurality of slice images of an object, acquired in different directions, can be displayed automatically without a user's manipulations.

Claim 1:
An ultrasonic imaging apparatus comprising:
an image processor (<NUM>) configured to extract a target in an object based on volume data of the object;
a controller (<NUM>) configured to determine a region of interest in the object, based on the extracted target; and
a display unit (<NUM>) configured to successively display a plurality of slice images of the object, including the region of interest,
wherein the display unit (<NUM>) is further configured to successively display the plurality of slice images of the object according to a predetermined distance between two successive slice images of the object and a predetermined frame rate,
wherein the display unit (<NUM>) is further configured to successively display a plurality of slice images of the object for an entire section of the object, the entire section of the object decided by the volume data of the object,
if a slice image being currently displayed includes the region of interest, the display unit (<NUM>) is configured to stop successively displaying the plurality of slice images of the object for the entire section of the object, and
after stopping successively displaying the plurality of slice images of the object for the entire section of the object, the display unit (<NUM>) is configured to successively display a plurality of slice images of the object for a section of interest which is decided by the region of interest and which is based on boundary lines of the region of interest,
wherein the display unit (<NUM>) further is configured to successively display a plurality of first slice images of the object, including the region of interest, wherein the plurality of first slice images are perpendicular to a predetermined first direction,
wherein the display unit (<NUM>) is configured to mark a position of a first slice image being currently displayed, in a second slice image of the object, wherein the second slice image of the object is perpendicular to a second direction being perpendicular to the first direction, and
wherein the display unit (<NUM>) is configured to mark the position of the first slice image being currently displayed, in a third slice image of the object, wherein the third slice image of the object is perpendicular to a third direction being perpendicular to the first direction and the second direction.