7. LIVER (r/o hemangioma)

Scan Acquisition	Native	Arterial	Venous
Range	Above diaphragm to iliac crests	Only liver lesion as identified by radiologist	Repeat series every 15 seconds through lesion as directed by radiologist
Care Dose 4D	on	on	on
Quality Reference	200 mAs	200 mAs	200 mAs
KV / effective mAs / rotation time	120 / 200 / 0.5	120 / 200 / 0.5	120 / 200 / 0.5
Detector collimation	1.5 mm	1.5 mm	1.5 mm
Slice Thickness	3.0 mm	3.0 mm	2.0 mm
Pitch	0.75	0.75	0.75
Kernel	B30f	B30f	B30f
Increment	3.0 mm	3.0 mm	3.0 mm
Image order	Cranial to caudal	Cranial to caudal	Cranial to caudal
Oral Contrast	2 hour oral	2 hour oral	2 hour oral
Intravenous Contrast	None	100 mL Isovue – 300
Injection Rate	N/A	3.0 cc/sec
Scan Delay	N/A	45 seconds post injection. Call the Radiologist to locate liver lesion. Radiologist will then direct which area to scan in the intervals listed in the image order. DO NOT scan entire liver OR abdomen in serial interval scanning.	Repeat serial scanning through liver lesion every 15 seconds for 3:00 minutes total. Lesion area selected by Radiologist. May perform 10 minute delay if requested.
Reconstruction	1. Recon 3x3 B30f mediastinum medium smooth 3. Recon 3x3 B80s 4. Recon 1x1 B30f 3D Card for coronal reconstruction	6. Recon 3 x 3 B30f	1. Recon 2 x 1 B30f

Clinical