| MTI | malignant teratoma, intermediate; minimum time interval; moving target indicator |
|---|---|
| NTE | neuropathy target esterase; neurotoxic esterase; not to exceed |
| OTC | ornithine transcarbamylase; oval target cell; over-the-counter; oxytetracycline |
| PTV | planning target volume; posterior tibial vein |
| PTV2 | planning target volume 2 |