There are multiple definitions:

1. ventricular pacing plus sensing, inhibited above a preset HR(English)

   • AAI, ESWL, HR
   • Electrophysiology, Cardiology

2. velocity vector imaging(English)

   • a technique to estimate strain and strain rate, i.e. software for analyzing gray scale images
   • GLS, HTN, DE-MRI
   • Medical imaging, Signal analysis
   • https://doi.org…0554-012-0120-7
   • https://doi.org…ging.109.865683