| MMR | mass miniature radiography; masseter muscle rigidity; maternal mortality rate; measles-mumps-rubella... |
|---|---|
| PXM | projection x-ray microscopy; pseudoexfoliation material |
| RTA | ray tracing algorithm; renal tubular acidosis; reverse transcriptase assay; road traffic accident |
| SXCT | spiral x-ray computed tomography |
| SXR | skull x-ray [examination] |