Document Detail

Hemodynamic evaluation of the peripheral pulmonary circulation by cine phase-contrast magnetic resonance imaging.
MedLine Citation:
PMID:  16270288     Owner:  NLM     Status:  MEDLINE    
PURPOSE: To describe the normal flow patterns in peripheral pulmonary vessels with phase-contrast (PC) magnetic resonance imaging (MRI). MATERIALS AND METHODS: Twelve healthy adults (age = 33 +/- 7 years) underwent cine PC MRI of the segmental and central pulmonary arteries and veins by means of a breath-held segmented k-space technique. Flow patterns were analyzed on time-velocity curves and compared between the peripheral and central vessels. RESULTS: The pulsatile flow patterns in the segmental arteries and veins were similar among individuals. When compared with the central pulmonary arteries, the segmental arteries had a delay in the systolic and diastolic flow velocity waves, and an increased magnitude of the diastolic peaks, in relation to the systolic peaks. A prominent notch was present during the deceleration phase of the systolic flow velocity wave in 79% of the segmental arteries investigated. The segmental veins showed a typical pulmonary venous flow pattern, as seen in the central veins, with similar systolic-to-diastolic peak velocity ratios. CONCLUSION: Noninvasive evaluation of blood flow in intraparenchymal pulmonary vessels is feasible with PC MRI. This first description of normal flow patterns in segmental pulmonary arteries and veins can serve as basis for further investigation in the setting of altered pulmonary blood flows.
Christian J Kellenberger; Christopher K Macgowan; Kevin S Roman; Fahad Al-Habshan; Lee N Benson; Andrew N Redington; Shi-Joon Yoo
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of magnetic resonance imaging : JMRI     Volume:  22     ISSN:  1053-1807     ISO Abbreviation:  J Magn Reson Imaging     Publication Date:  2005 Dec 
Date Detail:
Created Date:  2005-11-28     Completed Date:  2006-02-24     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  9105850     Medline TA:  J Magn Reson Imaging     Country:  United States    
Other Details:
Languages:  eng     Pagination:  780-7     Citation Subset:  IM    
Department of Diagnostic Imaging, Hospital for Sick Children, University of Toronto Faculty of Medicine, Toronto, Ontario, Canada.
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MeSH Terms
Blood Flow Velocity / physiology
Hemodynamics / physiology*
Magnetic Resonance Imaging, Cine / methods*
Pulmonary Artery / physiology
Pulmonary Circulation / physiology*
Pulmonary Veins / physiology
Pulsatile Flow / physiology

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

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