There are multiple definitions:

1. variable gain amplifier(English)

   • HDMI, LNA
   • Bioengineering

2. visual grading analysis(English)

   • m-AFC
   • Scoring systems/scales, Decision making, Psychology
   • https://doi.org…8/radiol.211832

3. voltage-guided ablation(English)

   • the only independent predictor of AF-/AT-free survival in a multivariate analysis
   • AF, PVAI, SA
   • Cardiology, Electrophysiology
   • https://doi.org….1111/jce.12830