eISSN: 2081-2841
ISSN: 1689-832X
Journal of Contemporary Brachytherapy
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5/2018
vol. 10
 
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abstract:
Original paper

An automated dose verification software for brachytherapy

Xianliang Wang, Pei Wang, Churong Li, Wu Zhangwen, Gou Chengjun, Jie Li, Shengwei Kang, Qing Hou

J Contemp Brachytherapy 2018; 10, 5: 478–482
Online publish date: 2018/10/31
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Purpose
To report an implementation method and the results of independent brachytherapy dose verification software (DVS).

Material and methods
The DVS was developed based on Visual C++ and adopted a modular structure design. The DICOM RT files exported from a treatment planning system (TPS) were automatically loaded into the DVS. The DVS used the TG-43 formalism for dose calculation. A total of 15 cervical cancer patients who underwent brachytherapy were retrospectively selected to test the DVS. Dosimetric parameters and  analysis (0.1 cm, 5%) were used to evaluate the dose differences between the DVS and the TPS.

Results
Compared with the TPS dose, the  pass rates of the dose calculated by the DVS were higher than 98%. For the clinical target volume (CTV), the dosimetric differences were less than 0.63% for D90% and D100%. For the bladder, rectum, and sigmoid, the agreement of D0.1cc, D1cc, and D2cc were within a 0.78% level.

Conclusions
With minimal human-computer interactions, the DVS can verify the accuracy of doses calculated by the TPS.

keywords:

brachytherapy, dose verification, quality assurance, treatment planning system

 
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