CT apparatus with reduced data transmission rate from the detector system to the image reconstruction computer

摘要

A CT (computed tomography) apparatus has a detector system which produces an x-ray beam that rotates around a system axis, and which produces data representing attenuation of the x-rays by an examination subject, and a data transmission path for the transmission of data from the detector system to an image reconstruction computer that is stationary relative to the detector system. Data required for a live image are extracted from the data supplied by the detector system during the scanning of a subject under examination, and are transmitted during the scanning to the image reconstruction computer via the data transmission path and after completion of the scanning, all data supplied by the detector system during the scanning are transmitted to the image reconstruction computer.