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Original Article

Korean Journal of Medical Physics 2006; 17(1): 40-46

Published online March 25, 2006

Copyright © Korean Society of Medical Physics.

Development of Film Verification as the QA of IMRT for Advanced Hepatoma Patients

간암 환자의 세기조절 방사선치료에서 임상적용 가능한 QA 기법의 개발

Myung Se Kim

김명세

Department of Therapeutic Radiology and Oncology, College of Medicine, Yeungnam University

영남대학교 의과대학 방사선종양학교실

Abstract

Hepatoma is one of 3 most common malignancies in Korea, the survival rate is not improved since last decades because of delayed diagnosis and limited treatment conditions. Radiation was one of treatment options but the impact on the survival is not remarkable. High dose exposure to target area was suggested for improved effect but low tolerance dose of normal liver tissue is the main limited factor. IMRT is the advanced form of 3DCRT, for focusing high dose on target with minimal dose to surrounding normal tissues. Motion of the tumor by respiration, cardiac pulsation and peristalsis is the main treatment barrier of IMRT for treatment of hepatoma patients. Development of QA technique for acceptable geometrical uncertainties and dose error on target volume is essential for IMRT in clinical treatment but proper QA technique is not yet developed. This study compared the verification film dosimetry with measured dose in phantom and calculated dose in planning computer on exactly same conditions of patient treatments. Within 3% dose differences between 3 groups were confirmed. We suggest that our verification QA technique is easy, economic, iterative and acceptable in clinical application for advanced hepatoma patients.

KeywordsHepatoma, IMRT, QA, Clinical application

Korean Society of Medical Physics

Vol.35 No.2
June 2024

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

Frequency: Quarterly

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