Mean glandular dose to patients from stereotactic breast biopsy procedures.

Mean glandular dose to patients from stereotactic breast biopsy procedures.
Phys Med Biol. 2018 Jun 07;:
Authors: Paixão L, Chevalier M, Hurtado-Romero AE, Garayoa J
Abstract
The aim of this work is to study the radiation doses delivered to a group of patients that underwent a stereotactic breast biopsy (SBB) procedure. Mean glandular doses (MGD) were estimated from the air-kerma measured at the breast surface entrance multiplying by specific conversion coefficients (DgN) that were estimated using Monte Carlo simulations. DgN were calculated for the 0º and ±15º projections used in SBB and for the particular beam quality. Data on 61 patients were collected showing that a typical SBB procedure is composed by 10 images. MGD was on average (4 ± 2) mGy with (0.38 ± 0.06) mGy per image. The use of specific conversion coefficients instead of typical DgN for mammography/tomosynthesis yields to obtain MGD values for SBB that are around a 65% lower on average.
PMID: 29877195 [PubMed - as supplied by publisher]

Source: Physics in Medicine and Biology - June 7, 2018 Category: Physics Authors: Paixão L, Chevalier M, Hurtado-Romero AE, Garayoa J Tags: Phys Med Biol Source Type: research