Dosimetric aspects of the therapeutic photon beams from a dual-energy linear accelerator

Journal Article · Tue Mar 01 04:00:00 EST 1988 · Med. Phys.; (United States)

DOI:https://doi.org/10.1118/1.596266· OSTI ID:5306184

Al-Ghazi, M S.A.L.; Arjune, B; Fiedler, J A; Sharma, P D

Parameters of the photon beams (6 and 20 MV) from a dual-energy linear accelerator (Mevatron-KD, Siemens Medical Laboratories, CA) are presented. The depth dose characteristics of the photon beams are d/sub max/ of 1.8 and 3.8 cm and percentage depth dose of 68% and 80% at 10-cm depth and 100-cm source--surface distance for a field size of 10 x 10 cm/sup 2/ for 6 and 20 MV, respectively. The 6 and 20 MV beams were found to correspond to nominal accelerating potentials of 4.7 and 17 MV, respectively. The stability of output is within +- 1% and flatness and symmetry are within +- 3%. These figures compare favorably with the manufacturer's specifications.

• Research Organization: Department of Medical Physics, Thunder Bay Regional Cancer Centre, Ontario Cancer Treatment and Research Foundation Thunder Bay, Ontario, Canada P7A 7T1
• OSTI ID: 5306184
• Journal Information: Med. Phys.; (United States), Journal Name: Med. Phys.; (United States) Vol. 15:2; ISSN MPHYA
• Country of Publication: United States
• Language: English

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