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Characteristics of photon beams from Philips SL25 linear accelerators
Author(s) -
Palta Jatinder R.,
Ayyangar Komanduri,
Daftari Inder,
Suntharalingam Nagalingam
Publication year - 1990
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.596540
Subject(s) - linear particle accelerator , flatness (cosmology) , photon , collimator , optics , beam (structure) , physics , dosimetry , particle accelerator , multileaf collimator , cathode ray , radiation , electron , nuclear physics , nuclear medicine , medicine , cosmology , quantum mechanics
The Philips SL25 accelerator is a multimodality machine offering asymmetric collimator jaws and a new type of beam bending and transport system. It produces photon beams, nominally at 6 and 25 MV, and a scattered electron beam with nine selectable energies between 4 and 22 MeV. Dosimetric characteristics for the 6‐ and 25‐MV photon beams are presented with respect to field flatness, surface and depth dose characteristics, isodose distribution, field size factors for both open and wedged fields, and narrow beam transmission data in different materials.