| Specific Anatomic Region | Thoracic Aorta |
| Application | R/O dissection |
| Author | Tomiak MM et al. |
| Reference Source | AJR 1995; 164:1525-1531 |
| Scanner Used | GE HiSpeed Advantage |
| Injection Rate | 4ml/sec |
| Contrast Volume and Type | 120ml of 60% iodinated contrast |
| Area Scanned | From apex of lung through approx L-1 |
| Scan Delay | 30sec |
| Length of Spiral (time) | 40sec |
| Slice Thickness | 5mm |
| Table Speed/Pitch | 3mm/sec with a pitch of 1:1 |
| Reconstruction Interval | 3mm |
| 3D Technique Used | MIP and shaded-surface |
| Comment: The technique is varied when the entire aorta is to be scanned. This protocol would be a 1:5:1 pitch, 60sec breathhold and 5mm collimation. | |