Calcium Sulphate Phosphor for Clinical Neutron Dosimetry

Abstract

CaS0,:Tm phosphor TLD has been used, mixed with glucose, to measure neutron and gamma doses separately. The results of measurements taken on 50 patients undergoing clinical neutron therapy are reported. Comparisons with isodose estimations at entrance and exit points give standard deviations of 8.8 and 17% respectively. An analysis of the errors involved indicates that the energy sensitivity of the system is a problem, but the results obtained are encouraging enough to continue development of a system for measuring doses in the treated volume. -