When evaluating RVG (Radiovisiography) sensors, the most critical technical factor is the Image Resolution, typically measured in line pairs per millimeter (lp/mm). High-end sensors offer theoretical resolutions of >20 lp/mm, though the actual resolution is what determines clinical clarity. You must also consider the Scintillator technology (e.g., Cesium Iodide - CsI), which converts X-rays to light; CsI scintillators are preferred for reducing noise and improving image quality at lower radiation doses. Additionally, ensure the sensor uses CMOS technology rather than older CCD tech for better power efficiency and integration.