Advanced Physics for Brachytherapy 2018

In summary:

• TLD remains the standard method for single source exp. dosimetry (both LE,HE) • Methodological recommendations are included in TG43U1 (Rivard et al. 2004), Joint AAPM-ESTRO report (Perez-Calatayud et al, 2012) and refs therein • At minimum calculate your correction using MC and including TLD att./volume and p phant as a function of (r,θ). These are significant for LE and less for HE. • What you don’t know (phantom composition, density, etc) goes in your uncertainty budget! • Overall uncertainty for LE is high mainly due to uncertainty. Dose rate constants measured are on average ~5% higher than MC and hence the recommendation for equally averaged, consensus values in TG43U1 (Rivard et al. 2004) rel bq k rel f

• A dosimeter with reduced uncertainty would be welcome!