X-ray diagnosis apparatus and dose distribution data generation method

摘要

An X-ray diagnosis apparatus detects X-rays output from an X-ray source and transmitted through a subject, and generates images of the inside of the subject, and comprises a detector, an X-ray intensity distribution data generator, and an entrance dose distribution data generator. The detector detects the intensity of the X-rays output from the X-ray source. The X-ray intensity distribution data generator generates X-ray intensity distribution data showing the X-ray intensity for each of a plurality of subdomains of an X-ray irradiation field from the X-ray source based on the detection outcome by the detector. The entrance dose distribution data generator generates entrance dose distribution data showing the dose of X-rays output from the X-ray source and irradiated onto the subject, based on the X-ray intensity distribution data.

主权项

1. An X-ray diagnosis apparatus comprising
an X-ray source configured to irradiate X-rays toward a desired irradiation field; an X-ray detector configured to detect the intensity of the X-rays irradiated by the X-ray source; an image data generator configured to generate an X-ray image based on the intensity of the X-rays detected by the X-ray detector; an area dosimeter interposed between the X-ray source and the X-ray detector, and configured to detect an area dose of the X-rays irradiated by the X-ray source; an intensity distribution data generator configured to generate distribution data, showing dose ratio for each of a plurality of subdomains of an irradiation field by using distribution data indicating SN ratio of the X-rays for each of the plurality of subdomains based on the intensity of the X-rays detected by the X-ray detector, as intensity distribution data showing the intensity for each of the plurality of subdomains; and a dose distribution data generator configured to generate dose distribution data showing the dose of the X-rays for each of the plurality of subdomains, based on the intensity distribution data generated by the intensity distribution data generator and the area dose detected by the area dosimeter.