| 摘要 |
For the purpose of providing a backprojection method and an X-ray CT apparatus by which backprojection processing can be simplified and sped up, instead of obtaining backprojection pixel data D2(x, y) directly from projection data D0 (view, ch), axially projected data D1 (view, pt) are obtained from projection data D0 (view, ch) by projecting them onto a straight line, and then backprojection pixel data D2 are obtained from the axially projected data D1.
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