| 摘要 |
<p>PURPOSE:To eliminate the influence of a scattered line by a simpler calculating method by deriving a scattering constant of air data, a scattering constant of water, and a scattering constant of raw data by a specific expression. CONSTITUTION:Air data obtained by X-ray irradiation is corrected in an offset correction procedure 31, and X-ray intensity is corrected in X-ray intensity correction procedures 32, 42 and 52. By scattering constant calculation procedures 34, 44 and 52, scattering constants CA, CW and CS are derived. By a scattering data correction projection data calculation procedure, corrected projection data PWTRi' and data Pij' of scattering data of a phantom are obtained.</p> |
