| 摘要 |
PROBLEM TO BE SOLVED: To provide an X-ray CT apparatus capable of reducing artifacts caused by a variation of signal processing characteristics without equalizing signal processing characteristics of each signal path of a DAS (Data Acquisition System) if a shared structure of signal paths in the DAS is used. SOLUTION: The X-ray CT apparatus has: a plurality of X-ray detection elements 9 arranged in a matrix form; a QV amplifier unit 12 having a plurality of QV amplifiers; a first signal route 14 connecting the plurality of X-ray detection elements and the QV amplifier unit 12; an AD converter unit 13 having a plurality of AD converters; and a second signal route 15 connecting the QV amplifier unit 12 and the AD converter unit 13. The plurality of X-ray detection elements 9 and the QV amplifier unit 12 are connected and the QV amplifier unit 12 and the AD converter unit 13 are connected so as to make different at least one of a signal processing characteristic of the QV amplifier unit 12 and signal a processing characteristic of the AD converter unit 13 for each X-ray detection element of the plurality of X-ray detection elements 9 or for each of an adjacent plurality of X-ray detection elements. COPYRIGHT: (C)2011,JPO&INPIT |
