CT Protocols: (Brain, ENT, Spine, Vascular) - Department of Radiology

120 Revised 7/22/09 (Gentry/Ranallo)
Vascular Imaging: CTA Neck Only: (Cerebrovascular Disease)
(Protocol – Adult: # 3.8 – Pediatric: # 11.22 & 11.23)
Billing:
Setup:
1. CTA Neck/Arch (with contrast)
2. Contrast
1. Patient Supine, AP and lateral scouts, no gantry tilt
2. Extend the scouts to include the aortic arch for smart prep.
3. 16 or 64 slice scanners
4. Patient Positioning: Tilt the patient’s head so that a line connecting the lateral
canthus of the eye and the EAC is perpendicular to the CT tabletop (see head CT
protocol).
Examination: CTA Neck and Arch
1. Scan Area Start scans at the carina and scan to the EAC (see below)
2. Scan direction Scan from bottom to top
Networking:
Processing:
3.
Contrast
Adult: On LS VCT 64 and LS 16 Pro:
80 ml of Iohexol 300 (24 g Iodine) with a 50 ml saline chase
Adult: On LS 16, LS 8 and LS 4:
120 ml of Iohexol 300 (24 g Iodine) with a 50 ml saline chase
Peds: 1 ml/lb (2 ml/kg) of Iohexol 300 with a 10-25 ml saline chase
4. Injection Rate Adult: 4 ml per sec
Peds: 2.0-2.5 ml/sec
5. Smart Prep Over aortic arch (initiate the scan at the entry of contrast in the aortic arch)
1. ALI store, CTAW2 and CTAW3
1. Thick Slab Reformat Instructions (See Appendix 1)
2. Perfusion Analysis (3D Lab) (See Appendices 3 and 4)
3. 3D Intravascular Image Analysis on ADW workstation (Do on Stent Cases)