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对Nucletron™高剂量率近距离放射治疗程序中未标准化施源器数字化的综述。

A review of nonstandardized applicators digitization in Nucletron™ HDR procedures.

作者信息

Wang Kelin, Ferenci Michele S, de la Zerda Alberto, Padgett Kyle R, Bossart Elizabeth L, Chao Ming, Shao Hua, Zhang Mutain

机构信息

Department of Radiology, Radiation Oncology, Penn State Milton S. Hershey Medical Center, Hershey, PA, USA.

Department of Radiation Oncology, Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL, USA.

出版信息

J Appl Clin Med Phys. 2017 Sep;18(5):89-96. doi: 10.1002/acm2.12156. Epub 2017 Aug 30.

DOI:10.1002/acm2.12156
PMID:28857433
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5875818/
Abstract

The major errors in HDR procedures were failures to enter the correct treatment distance, which could be caused by either entering wrong transmission lengths or imprecisely digitizing the dwelling positions. Most of those errors were not easily avoidable by enhancing the HDR management level because they were caused by implementations of nonstandardized applicators utilizing transmission tubes of different lengths in standard HDR procedures. We performed this comprehensive study to include all possible situations with different nonstandardized applicators that frequently occurred in HDR procedures, provide corresponding situations with standard applicator as comparisons, list all possible errors and in planning, clarify the confusions in offsets setting, and provide mathematical and quantitative solutions for each given scenarios. Training on HDR procedures with nonstandardized applicators are normally not included in most residential program for medical physics, thus this study could be meaningful in both clinical and educational purpose. At precision of 1 mm, our study could be used as the essential and practical reference for finding the correct treatment length as well as locating the accurate dwelling positions in any HDR procedure with nonstandardized applicators.

摘要

高剂量率（HDR）治疗程序中的主要误差是未能输入正确的治疗距离，这可能是由于输入错误的传输长度或对驻留位置进行数字化处理时不够精确所致。这些误差中的大多数难以通过提高HDR管理水平来避免，因为它们是在标准HDR程序中使用不同长度传输管的非标准化施源器导致的。我们开展了这项全面研究，涵盖HDR治疗程序中频繁出现的不同非标准化施源器的所有可能情况，提供使用标准施源器的相应情况作为对照，列出计划中的所有可能误差，澄清偏移设置中的困惑，并针对每种给定情况提供数学和定量解决方案。大多数医学物理住院培训项目通常不包括针对非标准化施源器的HDR治疗程序培训，因此本研究在临床和教育方面都可能具有意义。在1毫米的精度下，我们的研究可作为在任何使用非标准化施源器的HDR治疗程序中找到正确治疗长度以及确定精确驻留位置的重要实用参考。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c05/5875818/027409ff02fe/ACM2-18-89-g007.jpg
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