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1. (WO2018179905) INTERIOR CT IMAGE GENERATION METHOD

Pub. No.:    WO/2018/179905    International Application No.:    PCT/JP2018/004603
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Sat Feb 10 00:59:59 CET 2018
IPC: A61B 6/03
G06T 1/00
Applicants: UNIVERSITY OF TSUKUBA
国立大学法人筑波大学
Inventors: KUDO Hiroyuki
工藤 博幸
Title: INTERIOR CT IMAGE GENERATION METHOD
Abstract:
Provided is a versatile method for generating an interior CT image which enables highly accurate image reconstruction via an exact reconstruction method even when a priori information cannot be used. This interior CT image generation method comprises the steps of: acquiring interior CT projection data by measuring only all quantum beams that pass through a region of interest (ROI) in an object, within the context of a CT measurement geometry; and acquiring parts of the entire projection data by measuring quantum beams from segments located outside the object, within the context of the CT measurement geometry, that pass through the entire object. The method further comprises a processing step involving exact reconstruction of the ROI on the basis of the acquired interior CT projection data and parts of the entire projection data.