Quick Search:

uzh logo
Browse by:
bullet
bullet
bullet
bullet

Zurich Open Repository and Archive 

Studler, U; White, L M; Andreisek, G; Luu, S; Cheng, H; Sussman, M S (2010). Impact of motion on T1 mapping acquired with inversion recovery fast spin echo and rapid spoiled gradient recalled-echo pulse sequences for delayed gadolinium-enhanced MRI of cartilage (dGEMRIC) in volunteers. Journal of Magnetic Resonance Imaging, 32(2):394-398.

Full text not available from this repository.

Abstract

PURPOSE: To evaluate the impact of motion on T1 values acquired by using either inversion-recovery fast spin echo (IR-FSE) or three-dimensional (3D) spoiled gradient recalled-echo (SPGR) sequences for delayed gadolinium-enhanced magnetic resonance imaging of cartilage (dGEMRIC) in volunteers. MATERIALS AND METHODS: Single-slice IR-FSE and 3D SPGR sequences were applied to perform dGEMRIC in five healthy volunteers. A mutual information-based approach was used to correct for image misregistration. Displacements were expressed as averaged Euclidean distances and angles. Averages of differences in goodness of fit (Deltachi(2)) tests and averages of relative differences in T1 values (DeltaT1) before and after motion correction were computed. RESULTS: Maximum Euclidean distance was 3.5 mm and 1.2 mm for IR-FSE and SPGR respectively. Mean +/- SD of Deltachi(2) were 10.18 +/- 8.4 for IR-FSE and -1.37 +/- 5.5 for SPGR. Mean +/- SD of DeltaT1 were 0.008 +/- 0.0048 for IR-FSE and -0.002 +/- 0.019 for FSPGR. Pairwise comparison of Deltachi(2) values showed a significant difference for IR-FSE, but not for 3D-SPGR. Significantly greater variability in T1 values was also noted for IR-FSE than for 3D-SPGR. CONCLUSION: Involuntary motion has a significant influence on T1 values acquired with IR-FSE, but not with 3D-SPGR in healthy volunteers.

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic for Diagnostic and Interventional Radiology
DDC:610 Medicine & health
Language:English
Date:2010
Deposited On:01 Oct 2010 17:07
Last Modified:27 Nov 2013 22:33
Publisher:Wiley-Blackwell
ISSN:1053-1807
Publisher DOI:10.1002/jmri.22249
PubMed ID:20677268
Citations:Web of Science®. Times Cited: 8
Google Scholar™

Users (please log in): suggest update or correction for this item

Repository Staff Only: item control page