Measurement of the dose equivalent of leakage radiation through an isocentric gantry used for neutron therapy.
The leakage radiation through the shielding on an isocentric gantry of a neutron therapy machine was measured with a Rossi-type proportional counter. The dose equivalent of the leakage radiation was determined at two positions: (1) in the plane of the patient and (2) in the plane of the target. The dose equivalent of the leakage radiation is approximately the same as the leakage of a high-energy x-ray linac.
Horton
J L
JL
Department of Radiation Physics, University of Texas M.D. Anderson Hospital and Tumor Institute, Houston 77030.
Stafford
P M
PM
Kliauga
P
P
D006801:Humans; D009502:Neutrons; D011834:Radiation Monitoring; D011878:Radiotherapy / Q000295:instrumentation* / Q000379:methods