An MR-Based Viscosity-Type Regularization Method for Electrical Property Tomography.

ABSTRACT: Here, a method based on viscosity-type regularization is proposed for magnetic resonance electrical property tomography (MREPT) to mitigate persistent artifacts when it is used to reconstruct a map of electrical properties based on data from a magnetic resonance imaging scanner. The challenges for solving the corresponding partial differential equation (PDE) are discussed in detail. The existing artifacts in the numerical results are pointed out and classified. The methods in the literature for MREPT are mainly based on an assumption of local homogeneity, which makes the approach simple but leads to artifacts in the transition region where electrical properties vary rapidly. Recent work has focused on eliminating the assumption of local homogeneity, and one of the solutions is convection-r

SUBMITTER: Li C 

PROVIDER: S-EPMC6024427 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature