ELECTRONIC POSTER - ismrm

14:00 3701. 3-Component Phase-Contrast MRI WSS Vectors in the Carotid Bifurcation Are
Concurrent with Local Atherosclerotic Plaque Risk Hypotheses
Alex J. Barker 1 , Fuxing Zhang 2 , P E. Gates 3 , L A. Mazzaro 4 , A Stalder 1 , J Fulford 3 , C J.
Lanning 4,5 , M Markl 1 , Robin Shandas 4,5
1 Diagnostic Radiology, Medical Physics, University Hospital Freiburg, Freiburg, Germany; 2 Mechanical
Engineering, University of Colorado, Boulder, CO, United States; 3 Peninsula Medical School, University of
Exeter, United Kingdom; 4 Center for Bioengineering, University of Colorado at Denver Health Sciences, CO,
United States; 5 Division of Cardiology, The Children's Hospital, CO, United States need to fill this out
14:30 3702. Onset Time of Retrograde Flow in the Pulmonary Artery in Pulmonary Arterial
Hypertension Patients: An Estimator for Pulmonary Arterial Pressure?
Frank Helderman 1 , Gert Jan Mauritz 1 , J. Tim Marcus 1 , Kirsten Andringa 1 , Nico
Westerhof 1 , Anton Vonk Noordegraaf 1
1 VU University Medical Center, Amsterdam, Netherlands
The objective was to assess if mean pulmonary artery pressure (mPAP) could be estimated using a standard 2D MR phase-contrast
velocity quantification in the main pulmonary artery. Included were 37 Pulmonary Arterial Hypertension (PAH) patients vs 8 controls.
Onset time of the retrograde flow (Retrograde Onset Time = ROT) as fraction of cardiac cycle time, and cross sectional area (CSA) of
the main pulmonary artery were measured. Regression analysis revealed an association between mPAP and ROT (r=0.74; p