Improved reconstruction for IDEAL spiral CSI

Rie Beck Hansen, Christian Mariager, Christoffer Laustsen, Rolf F. Schulte, Jan Henrik Ardenkjær-Larsen, Lars G. Hanson

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Abstract

In this study we demonstrate how reconstruction for IDEAL spiral CSI (spectroscopic imaging scheme developed for hyperpolarized dynamic metabolic MR imaging) can be improved by using regularization with a sparsity constraint. By exploiting sparsity of the spectral domain, IDEAL spiral CSI can achieve chemical shift encoding by acquisition of only few time-shifted echoes. The minimum number of echoes required to avoid noise amplification can be decreased by means of regularization enforcing spectral sparsity, hereby reducing scan time. Improvements achieved by using regularized reconstruction are demonstrated for in vivo data from a hyperpolarized cardiac study of a pig.
Original languageEnglish
Publication date2017
Number of pages2
Publication statusPublished - 2017
Event ISMRM 25th Annual Meeting & Exhibition - Hawai'i Convention Center, Honolulu, United States
Duration: 22 Apr 201727 Apr 2017

Conference

Conference ISMRM 25th Annual Meeting & Exhibition
LocationHawai'i Convention Center
Country/TerritoryUnited States
CityHonolulu
Period22/04/201727/04/2017

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