| 摘要 |
Sensitivity information on the sensitivities of the channels of a flat x-ray detector (3) is used for sensitivity correction of an image formed by irradiation of a subject with x-rays and read out of the flat x-ray detector (3). The collection of sensitivity information is started when a signal for starting the collection of the sensitivity information is sent to a sensitivity information collection control means (11) from an operator console (12). The sensitivity information collection control means (11) sends an irradiation start signal for starting irradiation with calibration light to calibration light control means (10). The calibration light control means (10) controls calibration light irradiation means (9) so that a desired intensity of light may be applied to the inside of the flat x-ray detector (3). Thus, a calibration light reception signal outputted from the flat x-ray detector (3) is stored as sensitivity information in sensitivity information storage means (5). Consequently, such sensitivity information can be collected without irradiating the flat x-ray detector (3) with x-rays. Therefore, an x-ray image diagnosis apparatus in which the sensitivity information for correcting the sensitivities of the channels of the flat x-ray detector can be collected without irradiating the flat x-ray detector with x-rays is realized.
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