Toward 7T breast MRI clinical study: safety assessment using simulation of heterogeneous breast models in RF exposure.

ABSTRACT:

Purpose

To facilitate assessment of RF power deposition and temperature rise within the breast, we present a method to seamlessly join heterogeneous breast models with standard whole-body models and demonstrate simulations at 7 T.

Methods

Finite-difference time-domain electromagnetic and bioheat simulations are performed to analyze the specific absorption rate (SAR) and temperature rise distributions in 36 Breast Imaging Reporting and Data System (BI-RADS) categorized breast models fused to 2 female whole-body models while transmitting from a 7T breast volume coil. The breast models are uncompressed in the prone position and feature heterogeneous tissue contents; fusion with human models uses affine transformation and the level-set method.

Results

The fusion method pr

SUBMITTER: Li X 

PROVIDER: S-EPMC6380517 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature