Specific Anatomic Region | Stomach | |
Application | Gastric mass | |
Author | Horton HM, Fishman EK | |
Reference Source | Spiral CT of the Esophagus and Stomach (in: Spiral CT: Principles, Techniques and Clinical Applications. Fishman, Jeffrey, eds. 1998) | |
Scanner Used | Siemens Somatom Plus-4 | |
Injection Rate | 2-3ml/sec | |
Contrast Volume and Type | 120ml of Omnipaque-350 | |
Area Scanned | From diaphragm to top of iliac crest | |
Scan Delay | 30sec | |
Length of Spiral (time) | Up to 40sec | |
Slice Thickness | 3mm | |
Table Speed/Pitch | 5mm/sec | |
Reconstruction Interval | 2-3mm | |
3D Technique Used | None usually needed although virtual endoscopy may be useful. | |
Comment: 1. We classically would distend the stomach with 750cc of 3% Hypaque. We now routinely use 750-1000 cc of water. This allows better evaluation of the gastric wall and definition of tumors, etc. 2. Another reliable protocol is 5mm collimation and a pitch of 1 and reconstruction of data at 5mm intervals. This is primarily as a screening mode. |