Table 1.
Dose area product units of the different manufacturers
| Company | Siemens (µGy*m2) | Philips (cGy*cm2) | GE (Gy*cm2) | Toshiba/Canon (Gy*cm2) |
|---|---|---|---|---|
| Siemens (µGy*m2) | NA | NA | ×100 | ×100 |
| Philips (cGy*cm2) | NA | NA | ×100 | ×100 |
| GE (Gy*cm2) | :100 | :100 | NA | NA |
| Toshiba (Gy*cm2) | :100 | :100 | NA | NA |
DAP unit is modifiable in modern X-ray systems. The standard unit is Gy*cm2. Start with the line and look for the factor in the column. Example: the DAP from Siemens needs to be multiplied by 100 to give an equivalent to GE. NA, not available.