| Abbreviation | Definition |
|---|---|
| GM | Geiger-Mueller |
| GTV | Gross Tumor Volume |
| HRCT | High Resolution Computed Tomography |
| HRMS | High Resolution Mass Spectrometry |
| HVF | Hepatocycle Volume Fraction |
| IC | Impedance Cardiography |
| IEEE | Institute of Electrical and Electronics Engineers |
| IFMBE | International Federation for Medical and Biological Engineering |
| IGR | Image-Guided Radiosurgery |
| IGRT | Image Guided Radio-Therapy |
| IJFT | Idiopathic Juxtafoveal Telangiectasia |
| IL | Isodose Line |
| ILP | Intense Laser Physics |
| IMAT | Intensity Modulated Arc Therapy |
| INRT | Involved-Node RadioTherapy |
| IOCT | Intraoperative Optical Coherence Tomography |
| IOMP | International Organization for Medical Physics |
| IORT | Intra-Operative Radiation Therapy |
| IPEM | Institute of Physics and Engineering in Medicine |
| IPEMB | Institute of Physics and Engineering in Medicine and Biology |