Multi-echo MR thermometry using iterative separation of baseline water and fat images.

ABSTRACT:

Purpose

To perform multi-echo water/fat separated proton resonance frequency (PRF)-shift temperature mapping.

Methods

State-of-the-art, iterative multi-echo water/fat separation algorithms produce high-quality water and fat images in the absence of heating but are not suitable for real-time imaging due to their long compute times and potential errors in heated regions. Existing fat-referenced PRF-shift temperature reconstruction methods partially address these limitations but do not address motion or large time-varying and spatially inhomogeneous B₀ shifts. We describe a model-based temperature reconstruction method that overcomes these limitations by fitting a library of separated water and fat images measured before heating directly to multi-echo data measured d

SUBMITTER: Poorman ME 

PROVIDER: S-EPMC6550275 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature