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腹部立体定向自适应放疗的患者特异性感兴趣轮廓区域

Patient specific contouring region of interest for abdominal stereotactic adaptive radiotherapy.

作者信息

Price Alex T, Zachary Christopher J, Laugeman Eric, Maraghechi Borna, Zhu Tong, Henke Lauren E

机构信息

Washington University in St. Louis School of Medicine, St. Louis, MO, 63108, USA.

出版信息

Phys Imaging Radiat Oncol. 2023 Feb 3;25:100423. doi: 10.1016/j.phro.2023.100423. eCollection 2023 Jan.

DOI:10.1016/j.phro.2023.100423
PMID:36852334
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9958469/
Abstract

Contouring during adaptive radiotherapy (ART) can be a time-consuming process. This study describes the generation of patient specific contouring regions of interest (CRoI) for evaluating the high dose fall-off in stereotactic abdominal ART. An empirical equation was derived to determine the radius of a cylindrical patient specific CRoIs. These CRoIs were applied to 60 patients and their adaptive fractions (301 unique treatment plans). Out of the 301 unique treatment plans, 284 (94%) treatment plans contained the high dose fall-off within the CRoI. There was an expected predicted average timesaving of 2.9-min-per case. Patient specific CRoIs improves the efficiency of ART.

摘要

自适应放疗（ART）过程中的轮廓勾画可能是一个耗时的过程。本研究描述了用于评估立体定向腹部ART中高剂量剂量跌落的患者特异性感兴趣轮廓区域（CRoI）的生成。推导了一个经验方程来确定圆柱形患者特异性CRoI的半径。这些CRoI应用于60例患者及其自适应分次照射（301个独特的治疗计划）。在301个独特的治疗计划中，284个（94%）治疗计划的高剂量剂量跌落包含在CRoI内。预计每例患者平均可节省2.9分钟。患者特异性CRoI提高了ART的效率。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5852/9958469/df330778f29f/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5852/9958469/265e5631f4fe/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5852/9958469/df330778f29f/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5852/9958469/265e5631f4fe/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5852/9958469/df330778f29f/gr2.jpg

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Impact of Using Unedited CT-Based DIR-Propagated Autocontours on Online ART for Pancreatic SBRT.
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