Table 1 Computed tomography protocol
Mode | Supine position Spectral imaging mode Fast tube voltage switching between 80 and 140 kVp Craniocaudal direction |
|---|---|
Collimation thickness | 0.625 mm (64 detectors) |
Slice thickness | 5 mm |
Reconstruction parameters | 1-mm thickness, 1-mm interval |
Tube current | 600 mA |
Rotation speed | 0.6 s |
Helical pitch | 0.983 |
Reconstruction | Adaptive statistical iterative reconstruction (ASIR) |
Contrast agent | Iomeprol, Bracco, Konstanz, Germany (400 mgI/mL) |
Contrast agent dose and rate | 1.5 mL/kg body weight, at the rate of 4 mL/s |
Saline bolus and rate | 50 mL at the rate of 4 mL/s |
Scan delay | Automated triggering (threshold of 100 HU in the aorta) |