Radiation imaging system and operating method thereof

摘要

A console acquires a displacement amount of an X-ray source from a displacement amount detector. In the case where an electronic cassette having an image detector is not appropriately positioned with respect to a body part to be imaged, a position of the X-ray source is changed in accordance with a position of the body part to be imaged. A dose measurement field position determining unit specifies a current relative position between the X-ray source and the electronic cassette having the image detector based on a displacement amount. The dose measurement field position determining unit determines a position of a dose measurement field based on the specified current relative position.

主权项

1. A radiation imaging system including a radiation generating device having a radiation source for irradiating radiation to an object, and a radiation image detecting device having an image detector for detecting a radiation image of the object, the image detector being formed with an imaging surface on which pixels for accumulating electric charges upon receiving the radiation are two-dimensionally arranged, the radiation imaging system comprising:
a plurality of dose detection sensors disposed on the imaging surface, for detecting a dose of the radiation to perform exposure control of the radiation image; a dose measurement field setting section for setting a dose measurement field for the exposure control in the imaging surface by selecting at least one of the plurality of dose detection sensors; a displacement mechanism for displacing a relative position between the radiation source and the image detector; a displacement amount detector for detecting a displacement amount of the relative position; and a dose measurement field position determining section for specifying a current relative position as a current position of the relative position based on the displacement amount and determining a position of the dose measurement field set by the dose measurement field setting section based on the current relative position.