Journal
MAGNETIC RESONANCE IN MEDICINE
Volume 45, Issue 5, Pages 872-879Publisher
JOHN WILEY & SONS INC
DOI: 10.1002/mrm.1116
Keywords
heart; noninvasive; blood flow; velocity
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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, (C) 2001 Wiley-Liss, Inc.
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