PROBLEM TO BE SOLVED: To provide a medical image processor and the like which more quickly and easily determine primary X-ray flux data, first scattered X-ray flux data and multiple scattered X-ray flux data as compared with conventional ones.SOLUTION: A medical image processor includes: an acquisition part for acquiring detection data detecting X-rays transmitted through a subject and acquiring subject model information indicating a space distribution in the subject； and a determination part for determining scattered X-ray data indicating intensity of scattered X-rays detected by an X-ray detector used for detection of the transmitted X-rays by an integration type RTE. Concerning the scattered X-ray data, the determination part acquires primary X-ray flux data by integrating an attenuation value from an X-ray source to a prescribed detection position of the X-ray detector or to a first scattering position, and determines first scattered X-ray flux data including components of a sphere harmonic function by integrating the primary X-ray flux data at the first scattering position regarding a scattering cross-sectional area.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】プライマリＸ線束データ、第一の散乱Ｘ線束データ、多重散乱Ｘ線束データを、従来に比して迅速且つ簡単に決定する医用画像処理装置等を提供すること。【解決手段】被検体を透過した透過Ｘ線を検出した検出データを取得し、前記被検体内の空間分布を示す被検体モデル情報を取得する取得部と、透過Ｘ線の検出に用いられたＸ線検出器が検出する散乱Ｘ線の強度を示す散乱Ｘ線データを積分型ＲＴＥにより決定する決定部と、を備え、決定部は、散乱Ｘ線データを、Ｘ線源からＸ線検出器の所定検出位置まで又は第１の散乱位置までの減衰値を積分してプライマリＸ線束データを取得し、散乱断面積について第１の散乱位置におけるプライマリＸ線束データを積分して、球面調和関数の成分を含む第１の散乱Ｘ線束データを決定する、医用画像処理装置である。【選択図】 図１
