Simultaneous MR thermometry and acoustic radiation force imaging using interleaved acquisition.

ABSTRACT:

Purpose

A novel and practical method for simultaneously performing MR acoustic radiation force imaging (ARFI) and proton resonance frequency (PRF)-shift thermometry has been developed and tested. This could be an important tool for evaluating the success of MR-guided focused ultrasound procedures for which MR-thermometry measures temperature and thermal dose and MR-ARFI detects changes in tissue mechanical properties.

Methods

MR imaging was performed using a gradient recalled echo segmented echo-planar imaging pulse sequence with bipolar motion encoding gradients (MEG). Images with ultrasound pulses (ON) and without ultrasound pulses (OFF) during the MEG were interleaved at the repetition time (TR) level. ARFI displacements were calculated by complex subtraction of ON-OFF im

SUBMITTER: de Bever JT 

PROVIDER: S-EPMC5775920 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature