| OES | oral esophageal stethoscope; optical emission spectroscopy |
|---|---|
| PET | peak ejection time; polyethylene terphthalate; poor exercise tolerance; positron emission tomography... |
| PETT | pendular eye-tracking test; positron emission transverse tomography |
| SPECT | single photon emission computed tomography |
| TRE | thymic reticuloendothelial; thyroid hormone response; true radiation emission |