Point/Counterpoint. Calibration of radiotherapy ionization chambers using Co-60 is outdated and should be replaced by direct calibration in linear accelerator beams.
Radiotherapy Section, Medical Radiation Services Branch, Australian Radiation Protection and Nuclear Safety Agency, Yallambie 3085, Victoria, Australia (Tel: 61 3 9433 2273; E-mail: ramanathan.ganesan@arpansa.gov.au).
Ramanathan
R
Ganesan
Ionizing Radiation Standards, National Research Council, Ottawa, Ontario K1A OR6, Canada (Tel: 613-993-2197 Ext: 226; E-mail: malcolm.mcewen@nrc-cnrc.gc.ca).
Malcolm R
MR
McEwen
Colin G
CG
Orton
D002138:Calibration; D003037:Cobalt Radioisotopes; D010315:Particle Accelerators / Q000592:standards*; D011874:Radiometry / Q000295:instrumentation*; D011882:Radiotherapy, High-Energy
D003037:Cobalt Radioisotopes