Radiation Dose to Critical Cardiac Structures from Three-Dimensional Conformal Radiation Therapy (3D-CRT), Intensity-Modulated Radiation Therapy (IMRT) and Volumetric Modulated Arc Therapy (VMAT) Techniques for Left-Sided Breast Cancer
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Published:2024-01-03
Issue:1
Volume:14
Page:63
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ISSN:2075-4426
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Container-title:Journal of Personalized Medicine
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language:en
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Short-container-title:JPM
Author:
Konstantinou Evgenia1, Varveris Antonis2ORCID, Solomou Georgia3, Antoniadis Chrysostomos2, Tolia Maria2ORCID, Mazonakis Michalis1
Affiliation:
1. Department of Medical Physics, Faculty of Medicine, University of Crete, 71003 Heraklion, Greece 2. Department of Radiotherapy and Oncology, University General Hospital of Heraklion, 71110 Heraklion, Greece 3. Department of Medical Physics, University General Hospital of Heraklion, 71110 Heraklion, Greece
Abstract
A comparison of the radiation exposure to the left anterior descending artery (LAD) and left ventricle (LV) was performed for twenty-three left breast cancer patients. For each participant, two tangential fields 3D-CRT, two- and seven-field IMRT and two and four partial arcs VMAT plans were created. Dose constraints for CTV, ipsilateral lung and heart were followed. The V40Gy, V30Gy, Dav of LAD and V23Gy, V5Gy, Dav of LV were calculated and extracted from the plans. Parametric and non-parametric tests were applied to compare the parameters derived from the five treatment techniques. All generated plans fulfilled the dose constraints. The Dav ranges of the LAD and LV from all examined techniques were 11.77–14.73 Gy and 5.37–6.40 Gy, respectively. The V40Gy and V30Gy ranges of the LAD were 2.90–12.91% and 10.80–18.51%, respectively. The V23Gy and V5Gy of the LV were 4.29–7.43% and 18.24–30.05%, respectively. The VMAT plans and seven-field IMRT significantly reduced the V40Gy, V30Gy of LAD and V23Gy of LV compared with the two-field treatments (p < 0.05). However, 3D-CRT plans provided statistically lower values for V5Gy of LV over the other techniques (p < 0.05). The presented results provide a detailed dataset of the radiation burden of two critical cardiac structures from five radiotherapy techniques.
Subject
Medicine (miscellaneous)
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