Dosimetric Validation of an Electron Monte Carlo (eMC) Algorithm for Small Cutouts and Extended SSD’s: Assessing eMC in Small Field Dosimetry

Author

Anil Basavaaraju, Virginia Commonwealth UniversityFollow

DOI

https://doi.org/10.25772/8VM5-BC02

Defense Date

2025

Document Type

Thesis

Degree Name

Master of Science

Department

Radiation Oncology

First Advisor

Dr. Siyong Kim

Second Advisor

Dr. Lulin Yuan

Third Advisor

Dr. William Song

Abstract

This thesis validates the accuracy and limitations of Electron Monte Carlo (eMC) simulations in Eclipse treatment planning systems for small-field electron dosimetry and extended source-to-surface distances (SSDs). Systematic measurements were performed using a microDiamond detector across various electron energies and field sizes. The study examines the discrepancies between measured and calculated (eMC) dose distributions, validating challenges due to lateral scatter disequilibrium and extended air gaps. Our findings provide systematic data for eMC dose calculations and demonstrate that eMC performs within clinical tolerances, with the ultimate goal of enhancing the precision and safety of radiation treatments.

Rights

© Anil Basavaraju

Is Part Of

VCU University Archives

Is Part Of

VCU Theses and Dissertations

Date of Submission

5-6-2025