Keywords:
Cardiac, Molecular imaging, Computer applications, Echocardiography, Echocardiography (transoesophageal), MR, Computer Applications-3D, Computer Applications-Detection, diagnosis, Observer performance, Blood, Cerebrospinal fluid, Pathology
Authors:
M. Karvandi, S. Ranjbar; Tehran/IR
Results
During ejection,
the direction of the flow was from LV apex to LV out flow track (LVOT).
After the aortic valve closure,
in the early isovolumic relaxation (IVR) period,
the direction of flow reversed from LV base to apex with a brief appearance of vortex in the proximity of the mitral valve.
During the mid-late IVR period,
the non-vertical columnar flow was seen directed from base to apex.
In the early diastolic period,
an irrotational flow associated with early LV filling dominated the vector representation of flow.
In diastasis,
a relatively apically located vortex was seen.
This was followed by a late filling phase of atrial contraction,
which was characterized by irrotational flow obscuring the vortex.
After mitral valve closure,
in the early isovolumic contraction (IVC) period,
the vortex was relocated in the proximity of anterior mitral leaflet in the LVOT region and directed flow from LV apex to LVOT.
During late IVC period,
the vortex persisted in the LVOT region and directed flow towards the aortic valve.
With the aortic valve opening and ejection,
the vortex dissipated with continued flow from apex to LVOT (Figure 14).