Patent ID: 7803112

Claim:
An apparatus for displaying a target object by using 3-dimensional (3D) ultrasound data, comprising: a geometric look-up table storage unit configured to store indices of 3D data matched with Cartesian coordinates of a screen of a display device and resulting values of operations to convert the Cartesian coordinates to conical coordinates; a determination unit configured to receive information of a reference sectional plane from an interface device, receive the conical coordinates of the 3D data from a probe or a 3D data storage device, and determine whether a current display region displaying an image based on the 3D data of the target object is changed from a display region displaying a previous image on the screen; a display region calculation unit configured to calculate the display region to display the image on the screen when the display region is changed; a scan conversion unit configured to retrieve the indices and the operation resulting values stored in the geometric look-up table storage unit to perform scan conversion to convert Cartesian coordinates for display on the screen of the display device to conical coordinates of 3D data; and a rendering unit configured to render multiple sectional plane images, based on the scan-converted 3D data, parallel with the reference sectional plane.