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 PressureCLINICAL PERSPECTIVE — Circulation: Cardiovascular Imaging
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<h1 class="expansion-article-title"><span xmlns:hwp="http://schema.highwire.org/Journal" hwp:id="article-title-1"
class="article-title">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</span><span xmlns:hwp="http://schema.highwire.org/Journal" hwp:id="article-title-2"
class="sub-article-title">CLINICAL PERSPECTIVE</span></h1>
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<p id="p-21"><strong>Figure 1. </strong>Typical flow patterns in the right ventricular outflow tract at different cardiac phases for a patient with manifest PH (A,
D, and G), a patient with latent PH (B, E, and H), and a normal subject (C, F, and I). PA indicates main pulmonary artery;
PV, pulmonary valve; and RV, right ventricle. At maximum outflow (A through C), flow profiles were distributed homogenously
across the cross sections of the main pulmonary artery in the manifest PH group (A), the latent PH group (B), and the normal
group (C). In later systole (D through F), a vortex was formed in the manifest PH group (D). No such vortex could be found
in the latent PH group (E) or the normal group (F). After pulmonary valve closure (G through I), the vortex in the PH group
persisted for some time. In all cases, continuous diastolic blood flow upward along the anterior wall of the main pulmonary
artery could be observed. Although this phenomenon disappeared quickly in controls (I), it was observed significantly longer
in latent PH (H) and manifest PH (G).
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<cite>
<abbr title="Circulation: Cardiovascular Imaging" class="slug-jnl-abbrev">
Circulation: Cardiovascular Imaging</abbr><span class="slug-pub-date">
July 2008
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vol. 1
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no. 1
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23-30
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