| 摘要 |
PROBLEM TO BE SOLVED: To improve image quality by easily reducing an artifact of a three-dimensional image, and reducing a linear artifact becoming a hindrance to a reconstituted image of a digital/tomosynthesis/system. SOLUTION: In an artifact reducing method (400), a projected image is only partially back-projected. The plurality of projected images are acquired from different projection angles (410). Additionally, an area concerned of each projected area is identified on the basis of a predemarcated area (420), and the area concerned of each of the projected images is back-projected so that at least one three-dimensional image can be reconstituted (430). In one embodiment, the area concerned of the projected image is identified on the basis of a field of vision of a collimator. Another embodiment is provided with a tomosynthesis/system 100 for forming the three-dimensional image which keeps the artifact reduced. COPYRIGHT: (C)2008,JPO&INPIT
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