Skip Navigation

Cardiovascular Research 1997 33(1):156-163; doi:10.1016/S0008-6363(96)00175-7
© 1997 by European Society of Cardiology
This Article
Right arrow Full Text Freely available
Right arrow FREE Full Text (PDF) Freely available
Right arrow E-letters: Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when E-letters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Right arrow Disclaimer
Google Scholar
Right arrow Articles by Sloth, E.
Right arrow Articles by Hasenkam, J.M.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Sloth, E.
Right arrow Articles by Hasenkam, J.M.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Copyright © 1997, European Society of Cardiology

Where to place the Doppler sample volume in the human main pulmonary artery: evaluated from magnetic resonance phase velocity maps

Erik Slotha,c,1, Kim C. Houlindb,c,1, Erik M. Pedersenb,c,1 and J.Michael Hasenkamb,c,1

aDepartment of Anaesthesia, Skejby Sygehus, Aarhus University Hospital, 8200 Aarhuus N, Denmark
bDepartment of Cardiothoracic and Vascular Surgery T,Skejby Sygehus, Aarhus University Hospital,8200 Aarhuus, Denmark
cInstitute of Experimental Clinical Research and MR-Center, Aarhus Kommune Hospital, Aarhuus, Denmark

Objective: To give recommendations for the placement of Doppler sample volumes for blood flow assessment in the human main pulmonary artery. Methods: In 10 healthy volunteers MR-phase velocity measurements were obtained and computing of the mean temporal blood velocity data was performed to guide single point Doppler velocity recordings. Results: The mean temporal blood velocity profiles were consistently skewed with the lowest blood velocities towards the inferior/right vessel wall. Blood velocity indices (ratio of point to mean velocities, where a point equals a square of 4 pixels) varied considerably with the lowest indices located towards the inferior/right vessel wall. A centrally located fictive sample volume revealed an average blood velocity index value (average of all 10 subjects) of 1.08 (range 0.99–1.25; s.d. 0.08) where the central point was defined at maximum systole, and a value of 1.13 (range 0.97–1.34; s.d. 0.11) when the central point was defined in end-diastole. The mean of multiple sample volumes along the inferior/right to superior/left diameter revealed a blood velocity index of 1.01 (range 0.87–1.21; s.d. 0.09) in systole and 1.03 (range 0.87–1.19; s.d. 0.09) in diastole. Conclusions: For practical clinical purposes, single point estimation of the mean blood velocity in the pulmonary artery should be performed centrally. The use of multiple sample volumes placed along the inferior/right to superior/left diameter improves the mean velocity estimate in healthy volunteers. Further studies should be conducted to reinforce the basis for Doppler velocity recording in the diseased human pulmonary artery as well as to investigate other important determinants of Doppler-derived CO, namely angle of insonation and assessment of the cross-sectional area.

KEYWORDS Pulmonary artery; Blood velocity profile; Human; NMR; Doppler velocity recording

1 All authors are affiliated to the Cardiovascular Research Center, Aarhus University.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 Cardiovasc ResHome page
E. Sloth, M. Kruse, K. C Houlind, E. M Pedersen, and J.M. Hasenkam
The impact of ischemic heart disease on main pulmonary artery blood flow patterns: a comparison between magnetic resonance phase velocity mapping and transesophageal color Doppler
Cardiovasc Res, December 1, 1997; 36(3): 377 - 385.
[Abstract] [Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.