글로벌 연구동향
의학물리학
- 2023년 05월호
[Phys Med Biol .] Novel framework for determining TPS-calculated doses corresponding to detector locations using 3D camera in in vivo surface dosimetry생체 내 표면 선량 측정에서 3D 카메라를 사용하여 검출기 위치에 해당하는 치료계획 선량을 결정하기 위한 새로운 프레임워크연세의대 / 신희순, 김진성*, 홍채선*
- 출처
- Phys Med Biol .
- 등재일
- 2023 Feb 23
- 저널이슈번호
- 68(5).
- 내용
Abstract
Purpose. To address the shortcomings of current procedures for evaluating the measured-to-planned dose agreement inin vivodosimetry (IVD), this study aimed to develop an accurate and efficient novel framework to identify the detector location placed on a patient's skin surface using a 3D camera and determine the planned dose at the same anatomical position corresponding to the detector location.Methods. Breast cancer treatment was simulated using an anthropomorphic adult female phantom (ATOM 702D; CIRS, Norfolk, VA, USA). An optically stimulated luminescent dosimeter was used for surface dose measurements (MyOSLchip, RadPro International GmbH, Germany) at six IVD points. Three-dimensional surface imaging (3DSI) of the phantom with the detector was performed in the treatment position using a 3D camera. The developed framework, iSMART, was designed to import 3DSI and treatment planning data for determining the position of the IVD detectors in the 3D treatment planning DICOM image. The clinical usefulness of iSMART was evaluated in terms of accuracy and efficiency, for comparison with the results obtained using cone-beam computed tomography (CBCT) image guidance.Results. The relative dose difference between the planned doses determined using iSMART and CBCT images displayed similar accuracies (within approximately ±2.0%) at all detector locations. The relative dose differences between the planned and measured doses at the six detector locations ranged from -4.8% to 3.1% for the CBCT images and -3.5% to 2.1% for iSMART. The total time required to read the planned doses at six detector locations averaged at 8.1 and 0.8 min for the CBCT images and iSMART, respectively.Conclusions. The proposed framework can improve the robustness of IVD analyses and aid in accurate and efficient evaluations of the measured-to-planned dose agreement.Affiliations
Heesoon Sheen 1, Ye-In Park 2, Min-Seok Cho 3, Junyoung Son 3, Han-Back Shin 2, Min Cheol Han 2, Hojin Kim 2, Ho Lee 2, Dong Wook Kim 2, Jin Sung Kim 2, Chae-Seon Hong 2
1Department of Health Sciences and Technology, SamSung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Republic of Korea.
2Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea.
3Department of Radiation Oncology, Yongin Severance Hospital, Yongin, Republic of Korea.
- 키워드
- In vivo dosimetry; detector; optically stimulated luminescent dosimeter; planned dose; radiation therapy; surface dose.
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