Technical Note: Out-of-field dose measurement at near surface with plastic scintillator detector.

This study shows that a PSD can measure a dose as low as 0.51 ± 0.17 cGy for photon beam and 0.58 ± 0.20 cGy for electron beam with a difference of 0.2 and 0.1 cGy compared to a parallel-plate ion chamber. This study demonstrates the potential of using PSD as an out-of-field dosimeter since measure-ments with PSD avoid averaging over a too-large depth, at 1 mm diameter, and can make precise measurement at very low dose. Also, electronic equilibrium is easier to reach with PSD due to its small sensitive volume and its water equivalence.
PMID: 27685131 [PubMed - as supplied by publisher]

Source: Journal of Applied Clinical Medical Physics - September 30, 2016 Category: Physics Authors: Bourgouin A, Varfalvy N, Archambault L Tags: J Appl Clin Med Phys Source Type: research