Magnetic resonance fingerprinting with dictionary-based fat and water separation (DBFW MRF): A multi-component approach.

ABSTRACT:

Purpose

To obtain a fast and robust fat-water separation with simultaneous estimation of water T₁ , fat T₁ , and fat fraction maps.

Methods

We modified an MR fingerprinting (MRF) framework to use a single dictionary combination of a water and fat dictionary. A variable TE acquisition pattern with maximum TE = 4.8 ms was used to increase the fat-water separability. Radiofrequency (RF) spoiling was used to reduce the size of the dictionary by reducing T₂ sensitivity. The technique was compared both in vitro and in vivo to an MRF method that incorporated 3-point Dixon (DIXON MRF), as well as Cartesian IDEAL with different acquisition parameters.

Results

The proposed dictionary-based fat-water separation technique (DBFW MRF) successfully p

SUBMITTER: Cencini M 

PROVIDER: S-EPMC6590362 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature