검색
검색 팝업 닫기

Ex) Article Title, Author, Keywords

Article

Original Article

Korean Journal of Medical Physics 2005; 16(4): 176-182

Published online December 25, 2005

Copyright © Korean Society of Medical Physics.

Improvement of a Planning Technique Based on Heuristic Target Shaping for Stereotactic Radiosurgery

방사선 수술시 경험적 표적 근사화에 근거한 최적화 방법 개선

Seungjong Oh, Kyoung-Sik Choi, Ju-Young Song*, Tae-Suk Suh

오승종·최경식·송주영*·서태석

Department of Biomedical Engineering, The Catholic University of Korea, *Department of Radiation Oncology, Chonnam National University Hospital

가톨릭대학교 의과대학 의공학교실, *전남대학교병원 방사선종양학과

Abstract

Stereotactic radiosurgery (SRS) is a technique to deliver a high dose to a target region and a low dose to a critical organ through only one or a few irradiation. The SRS must be planned exactly. Currently the surgery plan is performed by trial and error method. There are many questions about the reliability and reproducibility of the plan result. This study improve each step of the Oh's method based on heuristic target shaping to obtain the better result. The target was reconstructed using cylinders with same height and the neighbored cylinders were combined according to the difference of each center and diameter. Then, spheres were packed within each cylinders by the packing rules. Two virtual targets were used to compare this method with Oh's method. As a result, the numbers of isocenter were successfully reduced - more than 36% and 26% - without serious differences of prescription isodose to tumour volume ratio (PITV) and maximum dose to prescription dose ratio (MDPD). This technique using cylinder piling and sphere packing will be a helpful tool to planner in stereotactic radiosurgery.

KeywordsSRS, Planning, Optimization, Heuristic, Data base

Korean Society of Medical Physics

Vol.35 No.2
June 2024

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

Frequency: Quarterly

Current Issue   |   Archives

Stats or Metrics

Share this article on :

  • line