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Estimation of relative cardiovascular pressures using time‐resolved three‐dimensional phase contrast MRI
Author(s) -
Ebbers Tino,
Wigström Lars,
Bolger Ann F.,
Engvall Jan,
Karlsson Matts
Publication year - 2001
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.1116
Subject(s) - visualization , phase contrast microscopy , contrast (vision) , biomedical engineering , computer science , phase (matter) , flow (mathematics) , artificial intelligence , medicine , mechanics , physics , quantum mechanics , optics
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.