Average glandular dose coefficients for pendant-geometry breast CT using realistic breast phantoms.

ABSTRACT:

Purpose

To design volume-specific breast phantoms from breast CT (bCT) data sets and estimate the associated normalized mean glandular dose coefficients for breast CT using Monte Carlo methods.

Methods

A large cohort of bCT data sets (N = 215) was used to evaluate breast volume into quintiles (plus the top 5%). The average radius profile was then determined for each of the six volume-specific groups and used to both fabricate physical phantoms and generate mathematical phantoms (V1-V6; "V" denotes classification by volume). The MCNP6 Monte Carlo code was used to model a prototype bCT system fabricated at our institution; and this model was validated against physical measurements in the fabricated phantoms. The mathematical phantoms were used to simulate normalized mean gland

SUBMITTER: Hernandez AM 

PROVIDER: S-EPMC5646224 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature