EDP130. THORACIC AORTA (r/o dissection)

Indications	Thoracic aortic dissection, aortic aneurysm
Number of scan Acquisition/series	2
Scan Acquisition	1. Noncontrast thoracic	2. Arterial Phase aorta
Range	Clavicular heads through both costophrenic angles	Clavicular head to iliac crests
Care Dose 4D	On	On
Quality Reference	100 mAs	150 mAs
KV / Effective mAs / Rotation time	120 / 100 / 0.5 seconds	120 / 150 / 0.5 seconds
Detector Collimation	1.5 mm	1.5 mm
Slice Thickness	2.0 mm	2.0 mm
Pitch factor	1.3	1.3
Kernel (for initial reconstruction)	B30f	B30f
Increment	2.0 mm	2.0 mm
Image order	Cranial - Caudal	Cranial - Caudal
Oral Contrast	None	None
Intravenous Contrast	None	100 cc Isovue 300 / 30 saline chaser (Dual Injector)
Injection Rate	N/A	4 cc second
Scan Delay	N/A	20-25 seconds approximately Use Care Bolus
Non-contrast thoracic Reconstruction (Series to send to PACS)	1. Recon 3x3 B31s Mediastinum medium smooth+ 2. Recon 3x3 B80s Lung ultrasharp 3. Recon 3x3 B41s Mediastinum medium+ (Coronal) 4. MIP Axial 20mm slab 3mm increments

IV contrast	80 cc Isovue 300
Injection Rate	3 cc second
Scan Delay (sec)	Usual: 25 seconds (if using 2.5 cc/second increase to 30 seconds). For patient with heart disease: Use Care Bolus ; Timing off Main PA
Arterial Phase Reconstruction (Series to send to PACS)	1. Recon 2x1 B31f Mediastinum medium smooth+(Best Diast) 2. Recon 2x2 B31f Mediastinum medium+ 3. Recon 3x3 B80f Lung ultrasharp 4. Recon 2x1 Bf31f Mediastinum medium smooth+(Best Syst) 5. MIP Axial 20mm slab 3mm increments

Clinical