LightSpeed Reduces X-ray Exposure Time

Building on the foundation of GE Healthcare’s CT platform, the LightSpeed VCT XT is reportedly capable of capturing images of the heart and coronary arteries in as few as five heartbeats. With SnapShot Pulse, the LightSpeed VCT XT reduces a patient’s X-ray exposure time by up to 70 percent for diagnostic cardiac scans, using a process called prospective triggered gating.

In standard cardiac CT exams, the X-ray remains on for the duration of the scan, even during periods when a patient’s heart is at an undesirable phase for diagnostic imaging. SnapShot Pulse introduces a timed, automated response to a patient’s heart rate, reportedly ensuring the X-ray is only on for portions of the scan. The system also features VolumeShuttle, which addresses the need for wide coverage for both dynamic angiography and perfusion in a single scan to enable whole organ anatomical and physiological assessment. VolumeShuttle doubles the coverage width of the anatomy without increasing dose, using a single contrast injection.

October 2007