359 / 1228
Type B uncertainty … input
Source geometry
Information is required on geometry, materials, density, elemental composition,
and dimensions.
The uncertainty of this information is more crucial for low energy sources
For reference dosimetry of new sources geometry and dimensions should be
verified experimentally in a sample of sources.
If the source includes parts of non-negligible mobility, MC should be performed
for different configurations and results averaged.
e microscopy (6711)
seed cut out view
(3631 A/M)
contact tr. radiography
(IsoSeed I25.S17plus)
Pics from: Rogers & Cygler (Eds), Clinical dosimetry
measurements in radiotherapy (2009 AAPM Summer
School), Monograph No. 34, Medical Physics Publishing 2011
Pantelis et al, J Contemp Brachytherapy 5(4),
240 (2013)