| 摘要 |
PROBLEM TO BE SOLVED: To provide an X-ray radiographing device 1 which obtains a tomogram D suitable for diagnosis by removing a false image appearing in the tomogram D wherein the numbers of superimposed perspective images are different depending on the portion. SOLUTION: According to an embodiment 1, a superimposed image C is generated by superimposing a series of perspective images P, and a luminance correction part 13 divides the superimposed image C by a luminance correction coefficient K which is the number of the superimposed perspective images P to obtain the tomogram D. Then, in the superimposed image C, supposing an area wherein the end of a subject M in the moving direction of an X-ray tube 3 and an FPD 4 is reflected to be a circumferential area and the other area to be a center area, the luminance correction coefficient K in circumferential area is smaller than that in the center area. Accordingly, the luminance of the tomogram C is suitably corrected depending on the portion, and the tomogram of the subject M is reflected with similar luminance in all the areas of the tomogram D. COPYRIGHT: (C)2011,JPO&INPIT
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