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Estimation of relative cardiovascular pressures using time-resolved three-dimensional phase contrast MRI

✍ Scribed by Tino Ebbers; Lars Wigström; Ann F. Bolger; Jan Engvall; Matts Karlsson

Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
561 KB
Volume
45
Category
Article
ISSN
0740-3194

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✦ Synopsis

Abstract

Accurate, easy‐to‐use, noninvasive cardiovascular pressure registration would be an important addition to the diagnostic armamentarium for assessment of cardiac function. A novel noninvasive and three‐dimensional (3D) technique for estimation of relative cardiovascular pressures is presented. The relative pressure is calculated using the Navier‐Stokes equations along user‐defined lines placed within a time‐resolved 3D phase contrast MRI dataset. The lines may be either straight or curved to follow an actual streamline. The technique is validated in an in vitro model and tested on in vivo cases of normal and abnormal transmitral pressure differences and intraaortic flow. The method supplements an intuitive visualization technique for cardiovascular flow, 3D particle trace visualization, with a quantifiable diagnostic parameter estimated from the same dataset. Magn Reson Med 45:872–879, 2001. © 2001 Wiley‐Liss, Inc.

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