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Figure 2 VVIs at Mid-Systole and MVO at Baseline and During Stenosis and Occlusion
The velocity vector images (VVIs) in the same dog as that shown in Figure 1. At mid-systole, inward velocity vectors became smaller in the risk area during occlusion but were not reduced during stenosis. At mitral valve opening (MVO), inward velocity vectors were revealed in the risk area during occlusion. Even during stenosis, outward velocity vectors were clearly reduced in the risk area. The transducer icon represents a reference point for calculation of radial velocity.
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