X-ray fluoroscopy device

Abstract

This X-ray fluoroscopic imaging apparatus comprises a reference region setting unit 19 with which a reference region is manually set on a display screen. An operator visibly confirms the position of a region of interest of a subject shown on a monitor 17 and, using the reference region setting unit 19, sets a new reference region on the display screen so as to include the region of interest therein. This allows rapid and reliable setting of the reference region that includes the region of interest therein. Additionally, in setting the reference region, burden on the operator is reduced because there is no need for the operator to look at places other than the monitor 17. A luminance value calculation unit 21 calculates an image luminance value on the basis of a luminance value of each pixel positioned within the range of the reference region, and an irradiation condition calculation unit 23 calculates a corrected irradiation condition on the basis of the image luminance value. An X-ray irradiation control unit 13 is capable of acquiring an X-ray image in which the operator can suitably view the region of interest by controlling an X-ray tube 5 on the basis of the corrected irradiation condition.

Description

technical field [0001] The present invention relates to an X-ray fluoroscopy apparatus for acquiring X-ray images by irradiating an object with X-rays, and more particularly relates to a technique for determining X-ray irradiation conditions for capturing suitable X-ray images. Background technique [0002] An X-ray fluoroscopy device that takes an X-ray image of a subject by irradiating the subject with X-rays is used in a medical field. Such as Figure 6 As shown, a conventional X-ray fluoroscopy apparatus 101 includes a top plate 103 , an X-ray tube 105 , an X-ray detector 107 , an image generation unit 109 , an image display unit 111 , and an X-ray irradiation control unit 113 . [0003] The top plate 103 is used to place the subject M in a horizontal posture. The X-ray tube 105 irradiates the subject M with X-rays 105a. X-ray tube 105 and X-ray detector 107 are arranged facing each other with top plate 103 interposed therebetween. The X-ray detector 107 detects the X...

AI Technical Summary

Problems solved by technology

[0006] Therefore, since the brightness (brightness) of the X-ray image displayed on the image display unit 111 varies with the thickness of the subject, the operation may not be performed appropriately.

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