Document Detail


In vivo functional NMR imaging of resistance artery control.
MedLine Citation:
PMID:  15706040     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Arterial spin labeling (ASL) in combination with NMR imaging is an in vivo technique that quantifies tissue perfusion in absolute values (ml blood x min(-1) x g tissue(-1)) with high temporal (1-10 s) and spatial (0.1-3 mm) resolution. It uses the arterial water spins as endogenous freely diffusible markers of perfusion and, hence, is a totally noninvasive method. The technique has been successfully applied to quantify baseline perfusion in many organs, including the heart, in humans and animals, and results were validated by comparison with gold standards, PET and microspheres, respectively. Because of the high sampling rate of perfusion with ASL and the possibility that measurements could be obtained without harm over indefinite periods of time, the technique has the potential for use in functional investigations of microcirculation regulation and resistance artery control in vivo. We describe examples of the use of ASL to this end. With use of specific technological developments, ASL determination of perfusion can be coupled with simultaneous acquisitions of (1)H and (31)P NMR spectroscopy data. These protocols offer new possibilities whereby the microcirculatory control of cell oxygenation and high-energy phosphate metabolism can be explored.
Authors:
P G Carlier; D Bertoldi
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review    
Journal Detail:
Title:  American journal of physiology. Heart and circulatory physiology     Volume:  288     ISSN:  0363-6135     ISO Abbreviation:  Am. J. Physiol. Heart Circ. Physiol.     Publication Date:  2005 Mar 
Date Detail:
Created Date:  2005-02-11     Completed Date:  2005-03-22     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  100901228     Medline TA:  Am J Physiol Heart Circ Physiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  H1028-36     Citation Subset:  IM    
Affiliation:
NMR Laboratory, AFM and CEA, Institute of Myology, IFR 14, Pitié-Salpêtrière University Hospital, Paris, France. p.carlier@myologie.chups.jussieu.fr <p.carlier@myologie.chups.jussieu.fr>
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MeSH Terms
Descriptor/Qualifier:
Animals
Arteries / physiology*
Humans
Magnetic Resonance Spectroscopy / methods*
Models, Cardiovascular
Vascular Resistance / physiology*

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