| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH |
|
|
|
|||||||
|
|||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1 Department of Physiology, Inserm & Universite Bordeaux, Bordeaux, Gironde, France
* To whom correspondence should be addressed. E-mail: elaffon{at}u-bordeaux2.fr.
The present method enables to non-invasively assess mean pulmonary arterial pressure from M.R. phase mapping by computing both physical and biophysical parameters. The physical parameters include the mean blood flow velocity over the cross-sectional area (CSA) of the main pulmonary artery (MPA) at the systolic peak, and the maximal systolic MPA CSA value whereas the biophysical parameters are related to each patient, such as height, weight, and heart rate. These parameters have been measured in a series of 31 patients undergoing right-side heart catheterization and the computed mean pulmonary arterial pressure value (PpaComp) has been compared with the mean pressure value obtained from catheterization (PpaCat) in each patient. A significant correlation was found which did not differ from the identity line PpaComp = PpaCat (r = 0.92). The mean and maximal absolute differences between PpaComp and PpaCat were 5.4 mmHg and 11.9 mmHg, respectively. The method was also applied to compute the MPA systolic and diastolic pressures in the same patient series. We conclude that this computed method that combines physical (whatever the patient) and biophysical parameters (related to each patient) improves the accuracy of MRI to non-invasively estimate pulmonary artery pressures.
This article has been cited by other articles:
|
|
 |
|
  L. E. R. McLure and A. J. Peacock Cardiac magnetic resonance imaging for the assessment of the heart and pulmonary circulation in pulmonary hypertension Eur. Respir. J., June 1, 2009; 33(6): 1454 - 1466. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 M.-P. Revel, J.-B. Faivre, M. Remy-Jardin, V. Delannoy-Deken, A. Duhamel, and J. Remy Pulmonary Hypertension: ECG-gated 64-Section CT Angiographic Evaluation of New Functional Parameters as Diagnostic Criteria Radiology, February 1, 2009; 250(2): 558 - 566. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 R. Benza, R. Biederman, S. Murali, and H. Gupta Role of Cardiac Magnetic Resonance Imaging in the Management of Patients With Pulmonary Arterial Hypertension J. Am. Coll. Cardiol., November 18, 2008; 52(21): 1683 - 1692. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 G. Reiter, U. Reiter, G. Kovacs, B. Kainz, K. Schmidt, R. Maier, H. Olschewski, and R. Rienmueller Magnetic Resonance-Derived 3-Dimensional Blood Flow Patterns in the Main Pulmonary Artery as a Marker of Pulmonary Hypertension and a Measure of Elevated Mean Pulmonary Arterial Pressure Circ Cardiovasc Imaging, July 1, 2008; 1(1): 23 - 30. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 A. Vonk-Noordegraaf, J.-W. Lankhaar, M. J.W. Gotte, J. T. Marcus, P. E. Postmus, and N. Westerhof Magnetic resonance and nuclear imaging of the right ventricle in pulmonary arterial hypertension Eur. Heart J. Suppl., December 1, 2007; 9(suppl_H): H29 - H34. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. Sanz, P. Kuschnir, T. Rius, R. Salguero, R. Sulica, A. J. Einstein, S. Dellegrottaglie, V. Fuster, S. Rajagopalan, and M. Poon Pulmonary Arterial Hypertension: Noninvasive Detection with Phase-Contrast MR Imaging Radiology, April 1, 2007; 243(1): 70 - 79. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 J.-W. Lankhaar, A. V. Noordegraaf, J. T. Marcus, E. Laffon, C. Vallet, V. Bernard, M. Montaudon, D. Ducassou, F. Laurent, and R. Marthan A computed method for noninvasive MRI assessment of pulmonary arterial hypertension J Appl Physiol, August 1, 2004; 97(2): 794 - 795. [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH |
| Visit Other APS Journals Online |
