Abstract:
A method for managing outputs to peripheral devices in medical systems devices is described. The method includes providing an instruction to provide an output, creating a data object based on the instruction, and storing the data object in a first memory if a peripheral device that provides the output is not available to accept the data object, where the first memory stores the data object for a longer term than a second memory.

Description:
BACKGROUND OF THE INVENTION  
       [0001]     This invention relates generally to imaging systems and more particularly to methods and systems for managing outputs to peripheral devices used with the imaging systems.  
         [0002]     In clinical ultrasound system applications, information relating to test results is often output to peripheral devices for a specific purpose. For example, the information may be output for communicating results, use in consulting with an expert, printing reports, maintaining backups, and archiving. There are circumstances when the peripheral devices may not be available during an examination, for example, when using a portable ultrasound imaging system. Portable ultrasound imaging systems are designed to address needs for mobile testing within, for example, a hospital, in satellite clinics, and in critical care environments.  
         [0003]     However, to minimize system size and weight of these portable devices, built-in removable media, which is used to transfer data from the ultrasound imaging system to the peripheral devices, usually is not included. Moreover, portability may be reduced if an operator takes several peripheral devices, such as a printer, a VCR, or a CD/MO/DVD writer, with the portable ultrasound imaging system in order to output information. On the other hand, if the peripheral devices are not immediately available (e.g., portable devices without peripherals), information cannot be output from the device until the operator connects the peripheral devices to the ultrasound imaging system and provides instructions for outputting the information. Thus, productivity and efficiency may be reduced.  
       BRIEF DESCRIPTION OF THE INVENTION  
       [0004]     In one aspect, a method for managing outputs to peripheral devices in medical systems devices is provided. The method includes providing an instruction to provide an output, creating a data object based on the instruction, and storing the data object in a first memory if a peripheral device that provides the output is not available to accept the data object, where the first memory stores the data object for a longer term than a second memory.  
         [0005]     In another aspect, an imaging system is provided. The imaging system includes a source for transmitting signals, and a processor operationally coupled to the source. The processor is configured to receive an instruction to provide an output, create a data object based on the instruction, and instruct to store the data object in a first memory if a peripheral device that provides the output is not available to accept the data object, where the first memory stores the data object for a longer term than a second memory.  
         [0006]     In yet another aspect, a computer-readable medium encoded with a program is provided. The program is configured to receive an instruction to provide an output, create a data object based on the instruction, and instruct to store the data object in a first memory if a peripheral device that provides the output is not available to accept the data object, where the first memory stores the data object for a longer term than a second memory. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0007]      FIG. 1  is a simplified block diagram of an exemplary embodiment of an imaging system in which systems and methods for managing outputs to peripheral devices of various embodiments of the invention may be implemented.  
         [0008]      FIG. 2  is a block diagram of an exemplary embodiment of an ultrasound imaging system in which systems and methods for managing outputs to peripheral devices may be implemented.  
         [0009]      FIG. 3  is a block diagram of an exemplary embodiment of a system for managing outputs to peripheral devices.  
         [0010]      FIGS. 4 and 5  are a flowchart of an exemplary embodiment of a method for managing outputs to peripheral devices. 
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0011]      FIG. 1  shows an exemplary embodiment of an imaging system  2  in which systems and methods for managing outputs to peripheral devices are implemented. Examples of imaging system  2  include an ultrasound imaging system, electron-beam tomography (EBT) imaging system, magnetic resonance imaging (MRI) system, single photon emission computed tomography (SPECT) imaging system, computed tomography (CT) imaging system, and positron emission tomography (PET) imaging system, among others. A processor  4  is operationally coupled to the imaging system  2 , for example, via a wireless or a wired connection. In an alternative embodiment, processor  4  is located within imaging system  2 . The processor  4  receives data from imaging system  2  and executes a method for managing outputs to peripheral devices as described herein.  
         [0012]      FIG. 2  is a block diagram of an exemplary embodiment of an ultrasound imaging system  10  in which systems and methods for managing outputs to peripheral devices may be implemented. An example of the ultrasound imaging system  10  is an ultrasound imaging system that does not include built-in removable media. Examples of built-in removable media include a floppy disk, an analog video cassette, an analog audio cassette, a digital versatile device, an optical disk, a DVD, a removable hard disk, and a flash memory card.  
         [0013]     The ultrasound imaging system  10  can be a portable or a non-portable imaging system. The ultrasound imaging system  10  includes a transmitter  12 , a front-end pre-processor  14 , a beamformer  16 , a radio frequency (RF) processor  18 , a memory  20 , a scan converter  22 , a transducer, referred to as an ultrasound probe  24 , a display device  26 , and a peripheral interface  28 . Examples of the display device  26  include a cathode ray tube (CRT) and a liquid crystal display (LCD) monitor. Examples of peripheral interface  28  include a network card, a bluetooth interface, a universal serial bus (USB), a parallel port, and a serial port. Examples of peripheral device  30  include a printer, an analog video cassette recorder (VCR), and digital storage media, such as, a CD-RW, a DVD rewriteable (DVD-RW), a floppy disk drive, an optical disk drive, a removable hard disk drive, a network, and a flash memory card drive, among others.  
         [0014]     Transmitter  12  transmits pulsed ultrasonic signals via the ultrasound probe  24 . Ultrasound probe  24  includes a transducer or a plurality of transducers that emit the pulsed ultrasonic signals into a region of interest, such as, for example, a patient&#39;s chest. Structures, such as a heart, blood cells, or muscular tissue, in region of interest back-scatter the ultrasonic signals to generate echoes which return to the ultrasound probe  24 .  
         [0015]     The front-end pre-processor  14  receives the echoes via the ultrasound probe  24  and generates electrical signals having information relating to structures in the region of interest. The front-end pre-processor  14  processes, such as, amplifies, the signals to provide an output. The beamformer  16  receives the output from the front-end pre-processor  14  and processes the output by digitizing the output, and performing steering or focusing operations to generate receive beams. The receive beams are processed by RF processor  18  or a complex demodulator (not shown) that demodulates the receive beams and forms in-phase and quadrature (I/Q) data pairs. Moreover, filtering and compression operations can also be performed by the RF processor  18 . An output of the RF processor  18  is routed to memory  20  for storage. The scan converter  22  receives the output from RF processor  18  and converts the output into an image for display. The display device  26  receives the image and displays the image. The peripheral device  30  that can be coupled to ultrasound imaging system  10  via the peripheral interface  28  is used to perform various operations on the image. For instance, the peripheral device  30  is used to print the image. As another instance, the peripheral device  30  may be used to store a copy of the image on a CD.  
         [0016]      FIG. 3  is an exemplary embodiment of a system  60  for managing outputs to peripheral devices. System  60  includes imaging system  2 , processor  4 , a short-term memory  62 , a long-term memory  64 , an input device  66 , an output device  68 , a connection interface  70 , and one or more peripheral device  30 . Examples of input device  66  include a keyboard, a mouse, and a trackball. Examples of output device  68  include display  36 . Examples of short-term memory  62  include a buffer and a volatile memory, such as a random access memory (RAM). Examples of long-term memory  64  include a non-volatile memory such as a read-only memory (ROM) and a RAM powered with a battery. Other examples of non-volatile memory include a hard disk, a digital versatile disc (DVD), a compact disc rewriteable (CD-RW), and a memory stick. Examples of ROM include a programmable ROM (PROM), an erasable programmable ROM, and an electrically erasable PROM (EEPROM). Long-term memory  64  can store data objects and access the data objects when processor  4  or imaging system  2  when needed or desired. An example of a data object is digitally formatted data object, such as a file. Processor  4  is not limited to integrated circuits referred to in the art as computers, but broadly refer to computers, microcontrollers, microcomputers, programmable logic controllers, application specific integrated circuits, and other programmable circuits, among others, and these terms are used interchangeably herein. Examples of connection interface  70  include a network card, a bluetooth interface, a universal serial bus (USB), a parallel port, and a serial port.  
         [0017]     Imaging system  2  scans a subject, such as a patient, to obtain data, such as, for instance, image data. Processor  4  receives the data from imaging system  2  and outputs the data, such as, video signals or information regarding a patient scanned using imaging system  2 , to output device  68 . Output device  68  displays the processed data in various forms, such as, images or cine loops.  
         [0018]      FIGS. 4 and 5  is a flowchart of an embodiment of a method for managing outputs to peripheral devices, for example, executed by using the system  60  shown in  FIG. 3 . At  82 , an operator of imaging system  2  (shown in  FIG. 3 ) provides an instruction to peripheral device  30  (shown in  FIG. 3 ) that provides an output representative of the processed data. As an example, the operator selects “print” on an input device  66  (shown in  FIG. 3 ). Such as, for example, a keyboard. In this example, by selecting “print”, the operator instructs the peripheral device  30 , such as a printer, to print the processed data. In this example, peripheral device  30  provides a printed copy of the processed data as an output. As another example, the operator selects a “record” button on output device  68 . In the example, by selecting “record”, the operator instructs peripheral device  30 , such as, for example, a VCR, to record the processed data. In this example, peripheral device  30  provides cine loops as an output. As yet another example, the operator selects a “send e-mail” button on output device  68  after attaching a copy of the processed data to the e-mail. In the example, by selecting “send e-mail”, the operator instructs peripheral device  30 , such as a node within a network, to e-mail the copy of the processed data. In this example, peripheral device  30  enables processor  4  to e-mail the copy of the processed data to another processor (not shown). As still another example, the operator selects a “save” or a “save as” button on output device  68 . In the example, by selecting the “save” or the “save as” button, the operator instructs peripheral device  30 , such as, for example, a CD-RW, a DVD-RW, a floppy disk drive, an optical disk drive, a removable hard disk drive, or a flash memory card drive, to create and store a copy of the processed data. In the example, peripheral device  30  creates and stores the copy of the processed data. One of the most important examples (may be should be listed first) is the instruction to print a report on the patient&#39;s examination. This is a must in order to get reimbursement.  
         [0019]     At  84 , processor  4  creates a data object based on the instruction. For example, if the instruction is to print, processor  4  creates a print data object that can instruct peripheral device  30  to print. If the instruction is to record on a VCR, processor  4  creates a record data object that can instruct peripheral device  30 , such as a VCR, to record. If the instruction is to e-mail a copy of the processed data, processor  4  creates an e-mail data object that can instruct peripheral device  30  to e-mail the copy of the processed data. If the instruction is to create and store a copy of the processed data, processor  4  creates a copy data object that can instruct peripheral device  30  to create and store a copy of the processed data.  
         [0020]     Processor  4  transmits the data object created based on the instruction to short-term memory  62  (shown in  FIG. 3 ) that sends the data object to connection interface  70 . Connection interface  70  attempts to send the data object to peripheral device  30 .  
         [0021]     At  86 , processor  4  (shown in  FIG. 3 ) determines whether peripheral device  30  is available to accept the data object. As an example, processor  4  determines whether peripheral device  30  is available by determining whether peripheral device  30  is operationally coupled to processor  4  via connection interface  70 . As another example, processor  4  determines whether peripheral device  30  is available by determining whether the processor has a wired connection with a printer via a parallel port. As yet another example, processor  4  determines whether peripheral device  30  is available by determining whether the processor  4  is connected via a wire or a wireless connection to a network that is connected via a wired or a wireless connection to the peripheral device. As still another example, processor  4  determines whether peripheral device  30  is available by determining whether the processor has a wired connection to a VCR. As another example, processor  4  determines whether peripheral device  30  is available by determining whether the processor has a wired connection to a CD-RW, a DVD-RW, a floppy disk drive, an optical disk drive, a removable hard disk drive, or a flash memory card drive. It is noted that one or multiple peripheral devices can be operationally coupled to processor  4  via connection interface  70  at the same time. Alternatively or in addition, processor  4  determines whether peripheral device  30  is available by determining whether peripheral device  30  is in an active state (e.g., turned on or energized). Alternatively or in addition, processor  4  determines whether peripheral device  30  is available by determining whether the peripheral device is properly functioning or not malfunctioning. Alternatively or in addition, processor  4  determines whether peripheral device  30  is available by determining whether the peripheral device  30  is busy performing other operations.  
         [0022]     If processor  4  determines that peripheral device  30  is available to accept the data object, the processor, at  88 , transfers or moves the data object from short-term memory  62  via connection interface  70  to peripheral device  30 . When peripheral device  30  receives the data object, the peripheral device verifies or acknowledges receipt of the data object to processor  4 . On receiving the acknowledgment, in an exemplary embodiment, processor  4 , at  90 , removes the data object from short-term memory  62 . As an example, processor  4  removes a print job from a job queue on receiving an acknowledgment that peripheral device  30  has received a print data object. In an alternative exemplary embodiment, on receiving the acknowledgment, processor  4  removes the data object from short-term memory  62 . If processor  4  does not receive the acknowledgment from peripheral device  30 , at  92 , a determination is again made at  86  as to whether the peripheral device  30  is available to accept the data object.  
         [0023]     If the processor  4  determines that peripheral device  30  is not available to accept the data object, the processor, at  94 , transfers the data object from short-term memory  62  to long-term memory  64 . In an alternative embodiment, if processor  4  determines that peripheral device  30  is not available to accept the data object, the processor copies the data object from short-term memory  62  to long-term memory  64 .  
         [0024]     If the peripheral  30  is not available, in an exemplary embodiment, the operator accesses the data object stored in long-term memory  64 , determines whether the peripheral device  30  is now available to accept the data object, and, if so, instructs processor  4  to transmit the data object via connection interface  70  to peripheral device  30 . In an exemplary embodiment, processor  4  automatically determines, at  98 , whether the peripheral device  30  is available to accept the data object stored in long-term memory  64 , and if so, accesses the data object from the long-term memory, and transmits, at  100 , the data object to peripheral device  30  via connection interface  70 .  
         [0025]     When peripheral device  30  receives the data object, the peripheral device  30  acknowledges receipt of the data object to processor  4 . On receiving the acknowledgment, in an exemplary embodiment, processor  4 , at  102 , removes the data object from long-term memory  64 . As an example, processor  4  removes a print job from a job queue on receiving an acknowledgment that peripheral device  30  has received a print data object. In an alternative exemplary embodiment, on receiving the acknowledgment, processor  4  removes the data object from short-term memory  62  and long-term memory  64  if the data object is copied from short-term memory  62  to long-term memory  64  instead of being transferred at  94 . If processor  4  does not receive the acknowledgment from peripheral device  30 , at  104 , a determination is again made at  98  as to whether the peripheral  30  is available to accept the data object.  
         [0026]     Upon receiving the data object, the peripheral device  30  executes the instruction based on which the data object is created. The peripheral device  30  also may acknowledge execution of the instruction to processor  4 .  
         [0027]     Technical effects of the systems and methods for managing outputs include eliminating various operations that the operator performs on returning to a facility, such as a hospital, after a traveling period during which data is collected from imaging system  2 . The operations include, for example, accessing an application program, searching for a correct patient record, preparing an output based on the patient record, and sending the output to peripheral device  30 . The operations are reduced and/or eliminated because the data object is saved in long-term memory  64  and on determining that peripheral device  30  is available, the data object is sent to the peripheral device to execute the instruction based on which the data object is created. Other technical effects of the herein described systems and methods include increasing productivity with no affects in portability of imaging system  2 , eliminating workflow downtime if peripheral device  30  is malfunctioning, using the same peripheral devices during and after travel, saving significant time delays between examination of the subject and output by the peripheral device, and increasing workflow efficiency.  
         [0028]     Although the herein described methods are described in a medical setting, the various embodiments described herein may be implemented in non-medical imaging systems such as those systems typically employed in an industrial setting or a transportation setting, such as, for example, but not limited to, a baggage scanning system for an airport, other transportation centers, government buildings, office buildings, and the like. The various embodiments described herein may also be implemented in micro PET and CT systems that are sized to study lab animals as opposed to humans. Further, additional or different component parts may be provided as desired or needed. Modifications, to the herein described component also may be provided. Moreover, the herein described systems and methods can be used with operating systems, such as Windows™ 2000 Windows™ XP™, Linux™, VMS™, OS/400™, AIX™, and z/OS™ located within processor  4 .  
         [0029]     While the invention has been described in terms of various specific embodiments, those skilled in the art will recognize that the invention can be practiced with modification within the spirit and scope of the claims.