Table 1
Clinical protocol parameters used in routine imaging for each of the three modalities.
| CT | CBCT | OPT | ||
|---|---|---|---|---|
| Facial bones | Dental | “Full” – coverage facial bones | “Zoom” – dental | Standard |
| 120 kVp | 110 kVp | 66 kVp | ||
| 240 mAs | 90 mAs | [1–20] mA/3.6 s | 9 mA/16 s | |
| 0.55 pitch | 0.8 pitch | |||
| 256 mm | 180 mm | (D*H) 15*15 cm2 | (D*H) 12*8 cm2 | (D*H) 30*14 cm2 |
| 26.9 mGy | 12.9 mGy | 3.0 mGy | 2.5 mGy | 103.5 mGy.cm2 |
The values indicated in: first row correspond to kilovolt; second row correspond to milliAmpere second; third row correspond to pitch (only for CT); fourth row correspond to Field Of View (“D” stands for diameter, “H” stands for height.); last row correspond to the volume computed tomography dose index CTDIvol for the CT and CBCT modalities and to the dose area product (DAP) for the OPT modality, respectively.
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