Estimation of the focal spot size and shape for a medical linear accelerator by Monte Carlo simulation
- Department of Physics and Astronomy, Laurentian University, Sudbury, Ontario, P3E 2C5 (Canada) and Department of Medical Physics, Hopital regional de Sudbury Regional Hospital, Sudbury, Ontario, P3E 5J1 (Canada)
The focal spot size and shape of a medical linac are important parameters that determine the dose profiles, especially in the penumbral region. A relationship between the focal spot size and the dose profile penumbra has been studied and established from simulation results of the EGSnrc Monte Carlo code. A simple method is proposed to estimate the size and the shape of a linac's focal spot from the measured dose profile data.
- OSTI ID:
- 20951042
- Journal Information:
- Medical Physics, Vol. 34, Issue 2; Other Information: DOI: 10.1118/1.2426407; (c) 2007 American Association of Physicists in Medicine; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-2405
- Country of Publication:
- United States
- Language:
- English
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