Meeting Banner
Abstract #2831

Reproducibility of Semi-LASER Localized Correlated Spectroscopic Imaging Using Concentric Ring Echo-Planar Trajectories

Andres Saucedo1, Manoj Kumar Sarma1, Uzay Emir2, James Sayre1, Paul M Macey3, and Michael Albert Thomas1
1Radiological Sciences, UCLA Geffen School of Medicine, Los Angeles, CA, United States, 2School of Health Sciences, Purdue University, West Lafayette, IN, United States, 3UCLA School of Nursing, Los Angeles, CA, United States

Five-dimensional correlated spectroscopic imaging using concentric ring trajectories (5D COSI-CONCEPT) has been implemented. Since the maximum slew rates required for the concentric ring trajectories are lower than those for Cartesian echo-planar spectroscopic imaging for a given spectral bandwidth and spatial resolution, the eddy current issues are less challenging. The acquired 5D COSI-CONCEPT data was regridded along kx-ky and the accelerated kz-t1 data was reconstructed using group sparsity. Reproducibility of the sequence was evaluated in a brain phantom using 3T Prisma and Skyra MRI scanners. Pilot findings showed excellent coefficients of variance and intra-class correlation coefficients for all the six metabolites.

This abstract and the presentation materials are available to members only; a login is required.

Join Here