Table 1 HRCT techniques used in this study
Machine | Toshiba Aquilion MSCT 64 channels |
|---|---|
Scout | Kv120 mA50 Holding breath |
HRCT protocol | |
 Scan type | Helical |
 Detector row | 64 |
 Helical thickness | 1.0 mm |
 Pitch | 1.484 |
 Speed | 0.5 |
 Detector | 64×0.5 |
 Beam collimation | 32.0 mm |
 Interval | 1.0 cm |
 Gantry tilt | 0.0 |
 FOV | Depends on the patient’s size |
 Kv | 120–140 |
 mA | 120–160 |
 Total exposure | 4–10 s |
 Inspiratory phase | Holding breath in full inspiration |