Lineshape of Magnetic Resonance and its Effects on Free Induction Decay and Steady-State Free Precession Signal Formation-Reference-Cited by-同舟云学术

Lineshape of Magnetic Resonance and its Effects on Free Induction Decay and Steady-State Free Precession Signal Formation

Published:2020-01-19 Issue: Volume:2020 Page:1-17
ISSN:1546-6086
Container-title:Concepts in Magnetic Resonance Part A
language:en
Short-container-title:Concepts in Magnetic Resonance Part A

Author:

Ziener C. H.¹²^ORCID,Uhrig M.¹,Kampf T.³⁴,Sturm V. J. F.²,Kurz F. T.¹²,Heiland S.²,Bendszus M.²,Pham M.⁴,Jakob P. M.³,Schlemmer H.-P.¹,Buschle L. R.¹^ORCID

Affiliation:

1. German Cancer Research Center (DKFZ), Department of Radiology (E010), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany

2. Heidelberg University Hospital, Department of Neuroradiology, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany

3. University of Würzburg, Department of Experimental Physics 5, Am Hubland, 97074 Würzburg, Germany

4. Würzburg University Hospital, Department of Diagnostic and Interventional Neuroradiology, Josef-Schneider-Straße 11, 97080 Würzburg, Germany

Abstract

Magnetic resonance imaging based on steady-state free precision (SSFP) sequences is a fast method to acquire T1, T2, and T2∗-weighted images. In inhomogeneous tissues such as lung tissue or blood vessel networks, however, microscopic field inhomogeneities cause a nonexponential free induction decay and a non-Lorentzian lineshape. In this work, the SSFP signal is analyzed for different prominent tissue models. Neglecting the effect of non-Lorentzian lineshapes can easily result in large errors of the determined relaxation times. Moreover, sequence parameters of SSFP measurements can be optimized for the nonexponential signal decay in many tissue structures.

Funder

Deutsche Forschungsgemeinschaft

Publisher

Hindawi Limited

Subject

Spectroscopy

Link

http://downloads.hindawi.com/journals/cmra/2020/5057386.pdf

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