| DQE | detective quantum efficiency |
|---|---|
| eff | effect; efferent; efficiency; effusion |
| ER | efficiency ratio; epigastric region; ejection rate; electroresection; emergency room; endoplasmic re... |
| HEPA | high-efficiency particulate air [filter] |
| PEI | Patient Exit Interview; phosphate excretion index; physical efficiency index; polyethyleneimine |