Simultaneous multislice imaging for native myocardial T₁ mapping: Improved spatial coverage in a single breath-hold.

ABSTRACT:

Purpose

To develop a saturation recovery myocardial T₁ mapping method for the simultaneous multislice acquisition of three slices.

Methods

Saturation pulse-prepared heart rate independent inversion recovery (SAPPHIRE) T₁ mapping was implemented with simultaneous multislice imaging using FLASH readouts for faster coverage of the myocardium. Controlled aliasing in parallel imaging (CAIPI) was used to achieve minimal noise amplification in three slices. Multiband reconstruction was performed using three linear reconstruction methods: Slice- and in-plane GRAPPA, CG-SENSE, and Tikhonov-regularized CG-SENSE. Accuracy, spatial variability, and interslice leakage were compared with single-band T₁ mapping in a phantom and in six healthy subjects.

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SUBMITTER: Weingartner S 

PROVIDER: S-EPMC5509494 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature