3. ABDOMEN CTA (AAA)

KV / effective mAs / rotation time  120 / 200 / 0.5 seconds
Detector collimation   1.5 mm
Slice Thickness  3.0 mm
Pitch  0.75
Kernel  B30f
Increment   3.0 mm
Image order  Cranial to caudad.
Oral Contrast  None
Intravenous Contrast  100 - 120cc at 3.0 cc/sec.
 18 - 22 ga IV needed preferably in the AC.
Scan Delay  CARE Bolus tracking. Place ROI on descending aorta
 at the level of the Diaphragm. Threshold at 120 HU