Dosimetric comparison of different IMRT vs VMAT planning techniques in the treatment of peripheral brain tumors.

Authors

Ahmed A. Hammad, Medical Biophysics, Department of Physics, Faculty of Science, Helwan University, and Radiotherapy Department, Tanta Military Oncology Center, Egypt.
Mohamed S. Ibrahim, Head of Radiation Physics Department, Oncology and Hematology Hospital, Maadi Armed Forces Medical Compound, Cairo, Egypt
Ayman M. Ibrahim, Medical Biophysics, Department of Physics, Faculty of Science, Helwan University, and Radiotherapy Department, Tanta Military Oncology Center, Egypt
Magdy M. Khalil, School of Allied Health Science, Badr University in Cairo, and Department of Physics, Faculty of Science, Helwan University, Cairo, EgyptFollow

Document Type

Original Study

Subject Areas

Physics

Keywords

Peripheral tumors; IMRT; VMAT; planning target volume; Dose-Volume Histograms

Abstract

Introduction This study aims to investigate and compare different IMRT and VMAT treatment planning techniques in peripheral brain tumors. Materials and Methods A total of 15 previously treated cases of peripheral brain tumors were selected and replanned with different techniques using a prescribed dose of 54 Gy in 30 fractions. Five different techniques: 5-field IMRT, 7-field IMRT, 9-field IMRT, 1-Half Arc VMAT, and 2-Half Arc VMAT, were systematically assessed. Evaluation was conducted based on dose-volume Histogram (DVH) metrics for both planning target volumes (PTVs) and organs at risk (OARs). Key parameters analyzed included the mean and maximum doses (Dmean and Dmax), monitor units (MUs), number of segments, treatment delivery time, as well as conformity (CI) index and homogeneity index (HI). All quantitative data were subjected to statistical analysis using SPSS version 29, applying one-way ANOVA and appropriate post hoc tests to compare outcomes across techniques. Results Among all evaluated techniques, 9F IMRT provided the highest mean PTV coverage (D95 = 53.9±0.34 Gy; p

How to Cite This Article

Hammad, Ahmed A.; Ibrahim, Mohamed S.; Ibrahim, Ayman M.; and Khalil, Magdy M. (2025) "Dosimetric comparison of different IMRT vs VMAT planning techniques in the treatment of peripheral brain tumors.," Trends in advanced sciences and technology: Vol. 2, Article 10.
DOI: 10.62537/2974-444X.1039
Available at: https://tast.researchcommons.org/journal/vol2/iss1/10