Work

Monte Carlo dose calculations for dynamic IMRT treatments

Year: 2001

Type: article

Abstract: Dose calculations for intensity modulated radiation therapy (IMRT) face new challenges due to the complex leaf geometry and time dependent nature of the delivery. A fast method of particle transport through a dynamic multileaf collimator (MLC) geometry that accounts for photon attenuation and first-scattered Compton photon production has been incorporated into an existing Monte Carlo code used for patient dose calculations. Dosimetric agreement between calculation and measurement for two photon energies and MLC types is within experimental error for the sliding window tests. For a patient IMRT field, the Monte Carlo calculations are closer to measured dose than similar superposition or pencil beam calculations.

Source: Physics in Medicine and Biology

DOI: 10.1088/0031-9155/46/4/302

Authors: P J Keall, J V Siebers, M Arnfield, J O Kim, R Mohan

Institutions: Virginia Commonwealth University, Virginia Commonwealth University Medical Center

Language: English

Topic: Advanced Radiotherapy Techniques

Subfield: Radiation

Field: Physics and Astronomy

Domain: Physical Sciences

SDG: Good health and well-being

Open Access status: bronze

Funders: National Institutes of Health, National Cancer Institute