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

Vascular Imaging: CT Venography:
(Protocol – Adult: #1.9 & 3.9 – Pediatric: # 11.24 & 11.25)
124 Revised 7/22/09 (Gentry/Ranallo)
Billing:
Setup:
1. CT Head with and without
2. CTA of Head +/- CTA of Neck with contrast
3. Contrast
1. Patient Supine, AP and lateral scouts, no gantry tilt
2. Extend the scouts to include the aortic arch for smart prep.
3. 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 below).
Exam: Part 1: Routine Head CT without contrast (helical)
Part 2: CTV Head
1. Scan Area From the top of the head to the bottom of C2 (see below)
2. Scan direction Scan from top to bottom
3. Contrast Adult: 150 ml of Iohexol 240 (36 g Iodine) with a 50 ml saline chase
Peds: 1 ml/lb (2 ml/kg) of Iohexol 240 with a 10-25 ml saline chase
4. Injection Rate Adult: 4 ml per sec (26.6 sec contrast injection time) (43.3 sec contrast
transit time)
Peds: 2.0-2.5 ml/sec
5. Smart Prep Over aortic arch (initiate the scan 5 seconds after entry of contrast in
the aortic arch)
Part 2b: Option: CTV Head and Neck
1. Do as in Part 2 except:
2. Scan Area: From the top of the head to the carina
Part 3: Routine Head CT with contrast (helical)
1. Wait at least 5 min from start of CTV contrast injection before beginning scan.