Monitoring Linear Accelerator Output Constancy Using the PTW Linacheck

Buckle, Andrew H

doi:10.1016/j.meddos.2009.12.001

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Monitoring Linear Accelerator Output Constancy Using the PTW Linacheck

Buckle, Andrew H

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Abstract

The PTW-Linacheck was assessed for its ability to monitor linear accelerator radiation output constancy. The key issues that were considered were the setup for daily output measurements, e.g., requirements for build-up and backscatter material, and the reproducibility and linearity of the device with linear accelerator output. An appropriate measurement setup includes a 10 x 10 cm field at 100 cm FSD, 5 cm backscatter, and no added build-up for 4 MeV electron beams, 1 cm added build-up for 6-16 MeV electron beams and 5 cm added build-up for 6-15 MV photon beams. Using this measurement setup, the dose linearity and short-term reproducibility were acceptable; however, the Linacheck should be recalibrated on a monthly basis to ensure acceptable long-term reproducibility.

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61 RADIATION PROTECTION AND DOSIMETRY ACCELERATORS BEAMS ELECTRON BEAMS LEPTON BEAMS LINEAR ACCELERATORS MONITORING PARTICLE BEAMS PHOTON BEAMS RADIATION MONITORING

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Buckle, Andrew H. 2011-04-01. Monitoring Linear Accelerator Output Constancy Using the PTW Linacheck. https://doi.org/10.1016/j.meddos.2009.12.001

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