Imaging for early stage breast cancer

Normal tissues protection with physical device

In vivo film dosimetry

collimator

disk

breast tissue

direct contact

collimator

poor collimator disk alignment

Lucite disk with 10 mm thickness

pectoralis muscles

The maximum dose transmitted through this protective bolus is 15% of the maximum dose (Dmax).

disk

collimator

Maluta et al. Int J Radiat Oncol Biol Phys 84:145-152. 2012

excellent collimator disk alignment

Severgnini et al. J Appl Clin Medi Phys, 16 , No. 1 , 2015