PROBLEM TO BE SOLVED: To accurately remove a scattered ray component included in a tomographic image in a tomographic image processing device, method, and program.SOLUTION: An image acquisition part 31 acquires a plurality of projection images Pi from a CT device 1. A reconfiguration part 32 reconfigures the plurality of projection images Pi and generates a plurality of tomographic images Dj. A scattered ray removal part 33 removes a scattered ray component included in a radioactive ray transmitting a subject H from the plurality of projection images Pi based on the tomographic image Dj. A repetition part 34 performs repetition processing to repeat generation of a new tomographic image by reconfiguring the projection image from which the scattered ray component is removed, and removal of the scattered ray component from the plurality of projection images on the basis of the new tomographic image.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2019,JPO&INPIT【課題】断層像処理装置、方法およびプログラムにおいて、断層像に含まれる散乱線成分を精度よく除去する。【解決手段】画像取得部３１が、ＣＴ装置１から複数の投影像Ｐｉを取得する。再構成部３２が、複数の投影像Ｐｉを再構成して複数の断層像Ｄｊを生成する。散乱線除去部３３が、断層像Ｄｊに基づいて、被写体Ｈを透過した放射線に含まれる散乱線成分を複数の投影像Ｐｉから除去する。繰り返し部３４が、散乱線成分が除去された投影像を再構成することによる新たな断層像の生成、および新たな断層像に基づく、複数の投影像からの散乱線成分の除去を繰り返す繰り返し処理を行う。【選択図】図２
