InTempo Adaptive Imaging System Addresses Prostate Motion

Accuray's InTempo Adaptive Imaging System enhances the CyberKnife Robotic Radiosurgery System’s ability to continually track and correct for motion of the prostate during treatment.

Studies have confirmed that the prostate can move significantly in only a matter of seconds during treatment delivery. With the introduction of the InTempo System, radiation delivery with the CyberKnife System automatically adapts to patient-specific intra-fraction prostate motion. By intelligently increasing imaging frequency during periods of rapid and erratic prostate movement, the CyberKnife System reportedly tailors treatment delivery uniquely to the movements of the prostate throughout the treatment session. This continual assessment of prostate motion combined, with the CyberKnife System’s automatic correction for movement in real time, not only helps to ensure prescribed doses are delivered to the prostate; it also helps to ensure surrounding sensitive structures are maximally spared.

With conventional radiation delivery techniques, such as 3D conformal and arcing IMRT, large treatment margins are commonly used to ensure adequate dose coverage in the event a potential prostate shift occurs. This additional dose coverage often encompasses regions of the rectum, bladder and urethra, increasing the risks of related toxicities and complications.

September 2008