The Journal of Korean Society for Radiation Therapy (대한방사선치료학회지)
- Volume 24 Issue 2
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- Pages.149-155
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- 2012
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- 1598-8449(pISSN)
The Usability Test of Manufactured Rounded Extension in Proton Therapy
자체 제작한 양성자 치료용 Rounded Extension의 유용성 평가
- Park, Ji-Yeon (Department of Proton Therapy Center, National Cancer Center) ;
- Jang, Yo-Jong (Department of Proton Therapy Center, National Cancer Center) ;
- Kang, Dong-Yun (Department of Proton Therapy Center, National Cancer Center) ;
- Yeom, Du-Seok (Department of Proton Therapy Center, National Cancer Center) ;
- Choi, Gye-Suk (Department of Proton Therapy Center, National Cancer Center)
- 박지연 (국립암센터 양성자치료센터) ;
- 장요종 (국립암센터 양성자치료센터) ;
- 강동윤 (국립암센터 양성자치료센터) ;
- 염두석 (국립암센터 양성자치료센터) ;
- 최계숙 (국립암센터 양성자치료센터)
- Received : 2012.03.18
- Accepted : 2012.08.23
- Published : 2012.09.30
Abstract
Purpose: Long Extension (LE) is used in proton therapy for lung and abdomen. However, it has limitations in surface area, produces collision in posterior oblique beam which creates limitations in various gantry angles in planning therapy and increases air gap (distance between patient and compensator). Therefore, this study investigates the usability of manufactured Rounded Extension (RE) in comparison to LE to use the most suitable extension in proton therapy. Materials and Methods: To compare structural features of LE and RE. This study investigated usable gantry angle for snout sizes 100, 180 and 250 and CT scanned Humanoid phantom. And it compared the air gap in posterior oblique direction. Results: The structural features of two extensions are as follow. Because of the existence of supporting bar, the width of LE was 40 cm and RE was 50 cm. Result of the investigation of usable gantry angle for snout sizes 100, 180 and 250 are as follow. LE is
목 적: 폐, 복부의 양성자 치료 시 사용되는 Long Extension (LE)은 Supporting bar에 의한 치료 면적의 제한이 있고, 후사방향의 빔에서 Collision으로 인해 치료 계획 시 다양한 갠트리 각도의 제한을 발생시키며 에어갭(Air gap, 환자와 Beam 사출구 사이의 거리)을 증가시킨다. 이에 본 연구는 본원에서 자체 제작한 Rounded Extension (RE)을 LE과 비교 평가하여 양성자 치료시 최적의 Extension을 적용하는데 그 목적이 있다. 대상 및 방법: LE과 RE의 구조적 특징을 비교하고, Snout size (
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