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Original Article

Korean Journal of Medical Physics 2010; 21(4): 354-359

Published online December 25, 2010

Copyright © Korean Society of Medical Physics.

The Dosimetric Effect on Real PTV and OARs at Various Image Fusion Protocol for Pituitary Adenomas

뇌하수체 종양의 방사선 수술 시 영상 융합 프로토콜이 실제 PTV와 OAR 선량에 미치는 영향

Kyung-Nam Lee*, Dong-Joon Lee, Tae-Suk Suh*

이경남*ㆍ이동준ㆍ서태석*

*Department of Biomedical Engineering, Research Institute of Biomedical Engineering, The Catholic University of Korea College of Medicine, Seoul, Department of Neurosurgery, College of Medicine, Inje University, Busan, Korea

*가톨릭대학교 의과대학 의공학교실, 가톨릭대학교 의과대학 생체의공학연구소,인제대학교 의과대학 신경외과학교실

Abstract

The purpose of this study is to verify the dosimetric effect on real PTV (planning target volume) coverage and safety of OARs (organs at risk) at various image fusion protocol-based radiosurgery plan for pituitary adenomas. Real PTV coverage and its variation was acquired and maximum dose and the volume absorbing above threshold dose were also measured for verifying the safety of optic pathway and brainstem. The protocol that can reduce superior-inferior uncertainty by using both axial and coronal MR (magnetic resonance) image sets shows relatively lower values than that of case using only axial image sets. As a result, the image fusion protocol with both axial and coronal image sets can be beneficial to generate OAR-weighted radiosurgery plan.

KeywordsPituitary adenomas, Image fusion protocol, PTV coverage, Safety of OARs

Korean Society of Medical Physics

Vol.34 No.1
March 2023

pISSN 2508-4445
eISSN 2508-4453
Formerly ISSN 1226-5829

Frequency: Quarterly

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