Evaluation of Wall Correction Factor of INER's Air-Kerma Primary Standard Chamber and Dose Variation by Source Displacement for HDR 192Ir Brachytherapy
Table 4
Calculation comparison for wall correction factors of the 192Ir primary standard chambers for NPL and NIST.
The NPL primary standard chamber for 192Ir
Wall correction factors calculated by
NPL
INER
Difference
k
wall values
1.0453
1.0429
ā0.23%
The NIST primary standard chamber (50cc-1) for 192Ir