Related Experiment Video
Updated: Jul 31, 2026
Dynamic Lung Tumor Tracking for Stereotactic Ablative Body Radiation Therapy
Published on: June 7, 2015
Dose calculation accuracy of lung planning with a commercial IMRT treatment planning system
Patrick N McDermott1, Tongming He, A DeYoung
1Department of Radiation Oncology, Karmanos Cancer Institute and Wayne State University, Detroit, Michigan 48201, USA. mcdermot@karmanos.org
Abstract:
The dose calculation accuracy of a commercial pencil beam IMRT planning system is evaluated by comparison with Monte Carlo calculations and measurements in an anthropomorphic phantom. The target volume is in the right lung and mediastinum and thus significant tissue inhomogeneities are present. The Monte Carlo code is an adaptation of the MCNP code and the measurements were made with TLD and film. Both the Monte Carlo code and the measurements show very good agreement with the treatment planning system except in regions where the dose is high and the electron density is low. In these regions the commercial system shows doses up to 10% higher than Monte Carlo and film. The average calculated dose for the CTV is 5% higher with the commercial system as compared to Monte Carlo.
