| KRRS | kinetic resonance Raman spectroscopy |
|---|---|
| NQR | nuclear quadruple resonance |
| RIMS | resonance ionization mass spectrometry |
| RIS | radiology information system; rapid immunofluorescence staining; resonance ionization spectroscopy |
| VR | right arm [electrode]; valve replacement; variable ratio; vascular resistance; venous reflux; venous... |