Table 1
Dose ranges and sources of radiation exposure
| Dose range | Examples of exposure | |
|---|---|---|
| Very low doses | < 0.05 Gy | Mammography4, chest X-ray4 |
| Low doses | 0.05–0.5 Gy | Cardaic CT angiogram4 |
| Medium doses | 0.5–5 Gy | One fraction dose in standard fractionated radiotherapy5, dose absorbed by workers during Fukushima accident6 |
| High doses | 5–15 Gy | Intraoperative radiotherapy (as boost)7 |
| Very high doses | > 15 Gy | Intraoperative radiotherapy8, cumulative dose delivered during fractionated radiotherapy5 |
Figure 1
Diagram illustrating targeted and non-targeted effect induced by radiation (all described in the main text).
Figure 2
Schematic diagram illustrating cell survival curve for cells exhibiting low dose hyper radiosensitivity (HRS). Solid line shows survival curve with evidence of HRS and increased radioresistance (IRR). Dashed line shows survival curve with no evidence of HRS and IRR. Image adapted from.29