Document Detail

Evaluation of myocardial motion tracking with cine-phase contrast magnetic resonance imaging.
MedLine Citation:
PMID:  7721545     Owner:  NLM     Status:  MEDLINE    
RATIONALE AND OBJECTIVES: The accuracy of myocardial motion measurements, computed from cine-phase contrast (cine-PC) magnetic resonance (MR) velocity data, was compared with directly visualized motion of MR signal voids caused by implanted tantalum markers in anesthetized dogs. METHODS: Magnetic resonance imaging (MRI) data were electrocardiogram-gated and divided into 16 phases per cardiac cycle. Myocardial trajectories as a function of time in the cardiac cycle were measured using both methods for four to seven markers in each of eight animals. RESULTS: The peak observed in-plane excursion was 4.0 +/- 2.1 mm. The average deviation between displacements derived from velocity data versus displacements visualized directly was 1.1 +/- 0.7 mm (27.5% of the peak displacement). The difference was less if three separate MR scans were used to measure each velocity component in the cine-PC method. This improvement is probably caused by improved temporal resolution. CONCLUSIONS: Cine-PC MRI offers a noninvasive method for accurate quantification of myocardial motion.
L R Pelc; J Sayre; K Yun; L J Castro; R J Herfkens; D C Miller; N J Pelc
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Investigative radiology     Volume:  29     ISSN:  0020-9996     ISO Abbreviation:  Invest Radiol     Publication Date:  1994 Dec 
Date Detail:
Created Date:  1995-05-25     Completed Date:  1995-05-25     Revised Date:  2010-03-24    
Medline Journal Info:
Nlm Unique ID:  0045377     Medline TA:  Invest Radiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1038-42     Citation Subset:  IM    
Department of Radiology, Stanford University School of Medicine, California, USA.
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MeSH Terms
Evaluation Studies as Topic
Heart / physiology*
Magnetic Resonance Imaging* / methods
Myocardial Contraction
Grant Support

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

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