Advanced Physics for Brachytherapy 2018
Source Strength Measurements
• All HDR 192 Ir sources can have RAKR measured by physicist
• Using PSDL traceably-calibrated equipment for RAKR measurement
• For the eBT sources, only the Axxent has direct traceability to PSDL
• INTRABEAM and esteya sources do not yet have direct traceability – physicist may use AAPM TG-61 calibration method if they know the electron scatter/absorber thickness and the HVL for their device
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