| 摘要 |
PROBLEM TO BE SOLVED: To provide an X-ray radiography apparatus for calculating a precise SID (Source Image Distance) even when an X-ray detector is completely hidden on the back surface side of a subject with respect to an X-ray source.SOLUTION: The X-ray detector 4 incorporates a beacon transmitter 10 and the X-ray tube includes a beacon receiver 12. An information acquisition part 5 calculates a distance SID from the X-ray tube 1 to the X-ray detector 4 on the basis of specific power when the beacon signal detected by a specific power detection part 55 is received and power when a beacon signal transmitted by the transmitter 10 is transmitted, and outputs it to a signal processing part 6. The signal processing part 6 generates an X-ray image by using a calculation result at the information acquisition part 5 and makes a display part 7 display the image. |
