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Photonuclear isotope characterization of a Siemens KDS 18 MV linac head
M Roig1, V Panettieri, M Ginjaume
1Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya, Diagonal 647, E08028 Barcelona, Spain.
Physics in Medicine and Biology
|September 11, 2004
Abstract:
Induced activity due to photonuclear reactions produced in the vacuum window of the accelerating wave-guide, the x-ray target and the beam-flattening filter of an 18 MV Siemens KDS linac has been studied. Measurements were performed using a high-purity portable germanium detector. Radioisotopes such as 196Au, 57Co, 60Co and other traces were detected one week after the last clinical use of the linac.
