Document Detail


Sensitivity encoding (SENSE) for contrast-enhanced 3D MR angiography of the abdominal arteries.
MedLine Citation:
PMID:  16161084     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
PURPOSE: To assess sensitivity encoding (SENSE) for contrast-enhanced MR angiography (CE-MRA) of the abdominal arteries in comparison with standard MRA protocols. MATERIALS AND METHODS: In 22 patients MRA of the abdominal arteries was performed twice (once using a standard protocol, and once with the additional use of SENSE). In 10 patients all examination parameters were kept constant (TR/TE/FA = 3.8 msec/1.3 msec/30 degrees ), and a reduction in scan time from 22 to 11 seconds was realized with the use of SENSE. In 12 patients, using SENSE the acquisition matrix was increased from 208 to 416, keeping the scan time constant. Image quality was scored on a five-point scale by three radiologists. Additionally, ROI-based measurements of CNR were performed. RESULTS: For both protocols, image quality was significantly improved using SENSE. The time-reducing SENSE protocol yielded an average score of 4.2 points vs. 3.1 for the standard protocol. Using SENSE to increase the acquisition matrix, an average score of 4.3 was reached vs. 3.2 for the standard protocol (P < 0.05). The number of depictable small vessels and their bifurcations was significantly increased by either of the two SENSE protocols as compared to the standard imaging procedure. CONCLUSION: SENSE for MRA of the abdominal arteries significantly increases image quality and permits a substantial reduction in breath-hold time or a significantly improved spatial resolution.
Authors:
Markus Born; Winfried A Willinek; Jürgen Gieseke; Marcus von Falkenhausen; Hans Schild; Christiane K Kuhl
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Journal of magnetic resonance imaging : JMRI     Volume:  22     ISSN:  1053-1807     ISO Abbreviation:  J Magn Reson Imaging     Publication Date:  2005 Oct 
Date Detail:
Created Date:  2005-10-03     Completed Date:  2006-01-19     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9105850     Medline TA:  J Magn Reson Imaging     Country:  United States    
Other Details:
Languages:  eng     Pagination:  559-65     Citation Subset:  IM    
Copyright Information:
(c) 2005 Wiley-Liss, Inc.
Affiliation:
Department of Radiology, University of Bonn, Bonn, Germany. mark.born@ukb.uni-bonn.de
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MeSH Terms
Descriptor/Qualifier:
Abdomen / blood supply*
Adult
Aged
Aged, 80 and over
Contrast Media*
Female
Humans
Image Enhancement / methods*
Imaging, Three-Dimensional*
Magnetic Resonance Angiography / methods*
Male
Middle Aged
Prospective Studies
Sensitivity and Specificity
Chemical
Reg. No./Substance:
0/Contrast Media

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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