Table 1 Used parameters for each CT scan and their calculated Dose, CNR, and SNR values.
| Â | mAs-30 | mAs-7 | mAs-30-Tin |
|---|---|---|---|
ref mAs | 30 | 7 | 30 |
CARE kV | 100 | 100 | 100 |
Pitch | 1.1 | 1.1 | 1.1 |
Collimation (mm) | 32 × 1.2 | 32 × 1.2 | 32 × 1.2 |
Tin filter | No | No | Yes |
CTDIvol (mGy) | 1.471 | 0.353 | 0.114 |
DLP (mGy.cm) | 155.82 | 37.418 | 11.66 |
Effective dose (mSv) | 2.33 | 0.561 | 0.175 |
SSDE (mGy) | 1.77 | 0.43 | 0.13 |
CNR | 28.90 | 26.22 | 10.73 |
SNR | 10.24 | 10.19 | 5.94 |