Specific anatomic region	lower extremity
Application	evaluate for necrotizing fasciitis or hematoma
Author	Elliot K Fishman, MD
Reference Source	JHU Protocol
Scanner Used	64 Slice
KV/Effective mAs/ Rotation time (sec)	120 / 200/ 0.5
Detector Collimation (mm)	0.6
Slice thickness (mm)	0.75mm (thin) 3.0mm (thick)
Pitch	0.55
Kernel	B30f medium smooth (thick, ST) B60f bone (thick) B20f smooth (thin)
Reconstruction interval	3.0mm (thick) 0.5mm (thin)
Image order (acquisition)	Cr-ca
Oral contrast	N/A
IV contrast volume and type	120 cc Omnipaque 350 (if needed)
Injection rate	Depends on study CTA 3-3.5 cc/sec Routine 2.0-2.5 cc/sec
Scan delay (sec)	CTA 20-45 sec (depending on zone scanned) Routine 60 sec
3D technique used	VRT & MIP
Comment: Saline chaser is helpful in these cases.