| 摘要 |
PROBLEM TO BE SOLVED: To provide an X-ray CT device that reliably protects a signal processing means provided at an X-ray detector from X rays. SOLUTION: In an X-ray CT device, provided is a rotor 4 rotating around a subject 2 that is provided with an X-ray tube 5 to irradiate a subject with X rays and an X-ray detector 6 comprising a plurality of detection element blocks 6a arranged in the slicing direction along the axis of subject's body and in the channel direction crossing the slicing direction. The circuit board 10a of signal processing means 10 mounted with a signal processing circuit 10b is arranged behind the wiring board 6b of X-ray detector almost in parallel with the latter. The wiring board is electrically connected with the circuit board with a connecting means 11. An X-ray shielding means 12 is installed on the wiring board so that it can cover a space above the signal processing circuit to prevent its exposure to the X-ray transmitting the wiring board. COPYRIGHT: (C)2009,JPO&INPIT
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