| Specific Anatomic Region | Intracranial Vessels |
| Application | Suspected aneurysm |
| Author | Schwartz RB et al. |
| Reference Source | Radiology 1994; 192; 717-722 |
| Scanner Used | Siemens Somatom Plus-S |
| Injection Rate | 2.5ml/sec |
| Contrast Volume and Type | 75ml of Hypaque-60 or Omnipaque-240 |
| Area Scanned | From base of sella turcica to top of brain |
| Scan Delay | 20sec |
| Length of Spiral (time) | 32sec |
| Slice Thickness | 2mm |
| Table Speed/Pitch | 2mm/sec |
| Reconstruction Interval | 1mm |
| 3D Technique Used | MIP |
| Comment: 1. The key to evaluation of intracranial aneurysms is narrow collimation. 2mm is needed. 2. 3D imaging is very helpful in these patients. |
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