QSMxT: Robust masking and artifact reduction for quantitative susceptibility mapping.

ABSTRACT:

Purpose

Quantitative susceptibility mapping (QSM) estimates the spatial distribution of tissue magnetic susceptibilities from the phase of a gradient-echo signal. QSM algorithms require a signal mask to delineate regions with reliable phase for subsequent susceptibility estimation. Existing masking techniques used in QSM have limitations that introduce artifacts, exclude anatomical detail, and rely on parameter tuning and anatomical priors that narrow their application. Here, a robust masking and reconstruction procedure is presented to overcome these limitations and enable automated QSM processing. Moreover, this method is integrated within an open-source software framework: QSMxT.

Methods

A robust masking technique that automatically separates reliable from less reliable p

SUBMITTER: Stewart AW 

PROVIDER: S-EPMC7612305 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature