| ISI | infarct size index; initial slope index; injury severity index; Institute for Scientific Information... |
|---|---|
| ISMED | International Society on Metabolic Eye Disorders ISMH International Society of Medical Hydrology |
| ISN | integrated service network; International Society of Nephrology; International Society of Neurochemi... |
| mIU | milli-international unit; one-thousandth of an international unit |
| SI | International System of Units [Fr. le Systeme International d'Unites]; sacroiliac; saline infusion; ... |
| ICIDH | International Classification of Impairments Disabilities and Handicaps |
|---|---|
| I.C.P.C. | International Classification of Primary Care |
| ICSD | International Classification of Sleep Disorders |
| ICRU | International Commission of Radiation Units and Measurements |
| ICRP | International Commission of Radiological Protection |