TUTORIALTutorial
Dose calculation
1. Dose calculation windowClick “CT Dose Calculator” on the right banner to move to the dose calculation screen.
2. Input calculation condition of a CT exposure.
Input calculation condition of a CT exposure into ① area.
| Manufacturer | GE, Siemens, Toshiba, Hitachi (Philips not-yet) |
| Scanner model | CT scanner model name |
| Filter | Bow-tie filter size(or name) depend on FOV size |
| Tube potential | Tube potential [kV] |
| Rotation time | Rotation time of X-ray tube [s] |
| Pitch factor | Helical scan: table feed per rotation / beam width Axial scan: = 1 |
| Beam width | Total beam width (number of slice x collimation width) |
| Gender | male or female |
| Phantom | Standard: adult standard body type (Japanese) Fat(+2SD), Fat(+5SD): adult fat body type (Japanese) Thin(-2SD): adult thin body type (Japanese) age:0～15: child 0～15 age |
| Scan type | Body type examined and procedure |
| Scan range | Scan range Drag square icons or input the numerical value of scan range. |
| AEC (Option) | When checking "On", the exposure dose in a CT scan using AEC(Auto
Exposure Control) function can be calculated. Tube current values at each position are required. |
| Tube Current | Tube Current [mA] |
| Optional Phantom (not yet） |
Body type correction function (not yet) |
| CTDI Phantom Size | Phantom size to calculate dose index |
Click "Calculate Dose" button after setting parameters.
Dose calculation start.
3. Check the result
Calculation result is shown in ② area.
ED103: Effective dose calculated in accordance with ICRP Publication 103
ED60: Effective dose calculated in accordance with ICRP Publication 60
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