Application of cadmium telluride detector to high speed X-ray CT scanner

An advanced high-speed X-ray computed tomography (CT) scanner system has been developed. This system consists of 60 X-ray tubes and 584 detectors. Cadmium telluride semiconductors are used as the detectors having suitable sensitivity, stability and time response. The concept of electrical switching of the electron beam is adopted instead of the mechanical motion of a conventional X-ray CT scanner to reduce the scanning time. The developed system can operate under a scanning time of 0.5 ms and gives 2000 slices per second. Detection and data acquisition should be performed during each X-ray shot period of about 16 μs.