A review of nonstandardized applicators digitization in Nucletron™ HDR procedures

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...

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Bibliographic Details
Published in:Journal of applied clinical medical physics 2017-09, Vol.18 (5), p.89-96
Main Authors: Wang, Kelin, Ferenci, Michele S., Zerda, Alberto, Padgett, Kyle R., Bossart, Elizabeth L., Chao, Ming, Shao, Hua, Zhang, Mutain
Format: Article
Language:English
Subjects:
Brachytherapy - instrumentation
Brachytherapy - methods
Design
Digitization
FDP
Humans
Medical Errors
Medical imaging
nonstandardized applicator
non‐CT‐compatible
Radiation Oncology Physics
Radiation therapy
Radiotherapy Dosage
TCL
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Summary: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.
ISSN:1526-9914
1526-9914
DOI:10.1002/acm2.12156