Dosimetric comparison of volumetric modulated arc therapy (VMAT) and high-dose-rate brachytherapy (HDR-BT) for superficial skin irradiation with significant curvature in one or more planes

Purpose This study compares the plan quality of high-dose-rate brachytherapy (HDR-BT) and volumetric modulated arc therapy (VMAT) for superficial irradiation of large areas of skin with significant curvature in one or more planes. Methods A total of 14 patients from two centres previously treated wi...

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Bibliographic Details
Published in:Strahlentherapie und Onkologie 2021-06, Vol.197 (6), p.547-554
Main Authors: Wills, Rachel J., Lowe, Gerry, Jones, Caroline L., Hoskin, Peter J.
Format: Article
Language:English
Subjects:
Computed tomography
Conformity
Curvature
Dosimetry
Irradiation
Medicine
Medicine & Public Health
Oncology
Organs
Original Article
Radiation dosage
Radiation therapy
Radiotherapy
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Summary:Purpose This study compares the plan quality of high-dose-rate brachytherapy (HDR-BT) and volumetric modulated arc therapy (VMAT) for superficial irradiation of large areas of skin with significant curvature in one or more planes. Methods A total of 14 patients from two centres previously treated with either HDR-BT or VMAT were retrospectively replanned using the alternative technique. Sites included scalp and lower limbs. Identical computed tomography (CT) scans, clinical target volume (CTV) and organs at risk (OARs) and prescription were used for both techniques. Conformity, skin surface dose and OAR doses were compared. Results Conformity index was consistently better with VMAT than HDR-BT ( p  
ISSN:0179-7158
1439-099X
DOI:10.1007/s00066-021-01759-4