Table 2. CT angiography protocol for upper extremity pathologies.
Parameter | Details |
---|---|
Position | Extremity of interest over the head with the palm ventral and fingers extended and straightened (whenever possible) |
Scan range | Carina to fingertips |
Delayed scan | Just above elbow to fingertips |
Trigger | Bolus tracking, trigger at aortic arch (180 HU) or manual trigger immediately at opacification of brachial artery in mid arm |
Contrast agent | Iopamidol 370 mg/mL (Bracco Diagnostic, Princeton, NJ), preferably inject in the non-affected extremity |
Amount and rate | 100–125 mL at 5 cc/s |
Saline flush | 40 mL at 4 cc/s |
Slice thickness | 1 mm with 0.7 mm reconstruction interval |
Window width/window level | 600/80 |
Pitch | Variable |
Reprinted with permission from (5).