Simultaneous multislice MRI thermometry with a single coil using incoherent blipped-controlled aliasing.

ABSTRACT:

Purpose

To increase volume coverage in real-time MR thermometry for transcranial MR-guided focused ultrasound (tcMRgFUS) ablation, without multiple receive coils.

Theory and methods

Multiband excitation and incoherent blipped-controlled aliasing were implemented in a 2DFT pulse sequence used clinically for tcMRgFUS, and an extended k-space hybrid reconstruction was developed that recovers slice-separated temperature maps assuming that heating is focal, given slice-separated pretreatment images. Simulations were performed to characterize slice leakage, the number of slices that can be simultaneously imaged with low-temperature error, and robustness across random slice-phase k-space permutations. In vivo experiments were performed using a single receive coil without heating to

SUBMITTER: Quah K 

PROVIDER: S-EPMC6824936 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature