Patent ID: 7436402

Claim:
A rendering apparatus for a real-time 3-dimensional (3D) ultrasound diagnostic system, the apparatus comprising: a first lookup table storage means for storing indices matching a 3D rectangular coordinate view and predetermined values corresponding to the indices; a determination means for receiving 3D data for a target object and determining whether the 3D data is initially received and whether a display region of the 3D data for the target object has been changed or not; a calculation means for calculating the display region; a scan-conversion means for searching the first lookup table storage means for indices matching the calculated display region and predetermined values corresponding to the searched indices to obtain conical coordinates corresponding to the calculated display region and scanning and converting the 3D data for the target object; a second lookup table storage means for receiving the 3D data from the determination means and storing the searched indices and the conical coordinates corresponding to the searched indices; and a rendering means for rendering the converted 3D data received from the scan-conversion means when it is determined that the display region is changed at the determination means or the 3D data is initially received, and for rendering the 3D data received from the second lookup table storage means by using the indices and the conical coordinates stored in the second lookup table storage means when it is determined that the display region is not changed at the determination means.