| 摘要 |
PROBLEM TO BE SOLVED: To efficiently execute swing type imaging for changing the angle of a radiation source in a radiation imaging system provided with only an auto tracking function. SOLUTION: An angle sensor unit 22 is mounted on a filter holding rail formed on a collimator device 18 of an X-ray source 11. The radiation imaging system includes: a control unit 33 having a moving amount calculation part 33a for calculating the moving amountΔH of an FPD 12 to a position facing the direction of the X-ray source 11 on the basis of the angleαof the X-ray source 11 detected by the angle sensor unit 22 and an SID (distance from the X-ray source 11 to the FPD 12) supplied from a console 16 when the angle of the X-ray source 11 is changed; and a pseudo signal output circuit 34 for generating fixed pseudo signals independent of the moving amountΔH by correcting the output voltage of a potentiometer 31 which detects the moving amount of the FPD 12 on the basis of the moving amountΔH and supplying the pseudo signals to a first motor control part 20 which controls the movement of the X-ray source 11. COPYRIGHT: (C)2011,JPO&INPIT
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