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2016 Fiscal Year Final Research Report

Study on quantification and visualization of displacement of divided regions on patient positioning in heavy-ion therapy

Research Project

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Project/Area Number 25461904
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Radiation science
Research InstitutionGunma University

Principal Investigator

Tashiro Mutsumi  群馬大学, 未来先端研究機構, 准教授 (60447274)

Research Collaborator KUBOTA Yoshiki  
HAYASHI Hayato  
Project Period (FY) 2013-04-01 – 2017-03-31
Keywords放射線治療 / 重粒子線治療 / 患者位置決め / 複数体積マッチング
Outline of Final Research Achievements

This study aims development of automatic patient positioning software for radiotherapy and further development of a function to quantify and visualize the displacement of separated parts in patient bodies by dividing the images. We developed a “Multi-Volume Matching” technique based on our 2D-3D patient positioning software. In this technique, a 3D-CT volume was divided into multi-volumes such as a volume of interest (VOI) and a base volume (BV). The VOI was segmented so as to include structure whose motion appears in X-ray images. Then, 2D-3D matching was processed using X-ray images and Digitally Reconstructed Radiographs, which were repeatedly generated by changing 3D positions and angles of VOI and BV independently to match most with the X-ray images. Using this technique, we could visualize and quantify the displacement of VOI, as well as bony structure of the base body.

Free Research Field

医学物理学

URL: 

Published: 2018-03-22  

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