| PVR | peripheral vascular resistance; perspective volume rendering; poliovirus receptor; postvoiding resid... |
|---|---|
| RCM | radial contour model; radiographic contrast medium; red cell mass; reinforced clostridial medium; re... |
| SIR | single isomorphous replacement; specific immune release; standardized incidence ratio; syndrome of i... |
| SRT | sedimentation rate test; simple reaction time; sinus node recovery time; sitting root test; speech r... |
| VR | right arm [electrode]; valve replacement; variable ratio; vascular resistance; venous reflux; venous... |