Improved reconstruction for IDEAL spiral CSI

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

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 language	English
Publication date	2017
Number of pages	2
Publication status	Published - 2017
Event	ISMRM 25th Annual Meeting & Exhibition - Hawai'i Convention Center, Honolulu, United States Duration: 22 Apr 2017 → 27 Apr 2017

Conference

Conference	ISMRM 25th Annual Meeting & Exhibition
Location	Hawai'i Convention Center
Country/Territory	United States
City	Honolulu
Period	22/04/2017 → 27/04/2017

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@conference{9aa8990affb14534b9c89433b75cf6e3,

title = "Improved reconstruction for IDEAL spiral CSI",

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.",

author = "Hansen, {Rie Beck} and Christian Mariager and Christoffer Laustsen and Schulte, {Rolf F.} and Ardenkj{\ae}r-Larsen, {Jan Henrik} and Hanson, {Lars G.}",

year = "2017",

language = "English",

note = " ISMRM 25th Annual Meeting & Exhibition, ISMRM 2017 ; Conference date: 22-04-2017 Through 27-04-2017",

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TY - ABST

T1 - Improved reconstruction for IDEAL spiral CSI

AU - Hansen, Rie Beck

AU - Mariager, Christian

AU - Laustsen, Christoffer

AU - Schulte, Rolf F.

AU - Ardenkjær-Larsen, Jan Henrik

AU - Hanson, Lars G.

PY - 2017

Y1 - 2017

N2 - 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.

AB - 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.

M3 - Conference abstract for conference

T2 - ISMRM 25th Annual Meeting & Exhibition

Y2 - 22 April 2017 through 27 April 2017

ER -

Improved reconstruction for IDEAL spiral CSI

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