Radiation imaging system and operating method thereof
First Claim
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.
1 Assignment
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Accused Products
Abstract
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.
15 Citations
18 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An operating method of 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, a plurality of dose detection sensors, and a dose measurement field setting section, the image detector being formed with an imaging surface on which pixels for accumulating electric charges upon receiving the radiation are two-dimensionally arranged to detect a radiation image of the object, the plurality of dose detection sensors being disposed on the imaging surface to detect a dose of the radiation to perform exposure control of the radiation image, and the dose measurement field setting section 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, the operating method comprising:
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a displacement amount detecting step for detecting a displace amount of a relative position between the radiation source and the image detector; and a dose measurement field position determining step 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.
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Specification