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

143 Revised 7/22/09 (Gentry/Ranallo)
Appendix: 11
Combined Neuro and Body Contrast Studies
1. Split the total contrast dose equally with Body/Chest/Abdomen so that neuro has a
total of about 50 cc of 300 mg / ml of nonionic contrast unless otherwise indicated.
2. When the neuro CT study follows a body/chest/abdomen study, initiate the neuro CT
scans immediately after detection of contrast on smart prep. Do not use a CT delay in
these cases.
3. Modify the injection parameters of the following studies for the combined studies as
follows: (Omnipaque 300 unless otherwise specified) (Note: CTA studies will require a
total dose of contrast that exceeds 150 ml)
Volume (cc)
Rate (cc/sec)
A. CTA Head Only: 50 4
B. CTA Head with Perfusion: (only 64 slice scanner)
- CTA (Omnipaque 300) 40 3.3
- Perfusion (Omnipaque 370) 40 5
C. CTA Head & Neck: (only 64 slice scanner) 80 2.8
D. CTA Neck Only: 50 4
E. CT Neck: 50 3
F. CT Orbit/Maxiface/Sinus/TB: 50 3
G. CT Spine (C-T-L): 50 3
H. CT Sella: 50 4
4. Do not do the following studies as combined studies with Body/Chest/Abdomen
unless the studies are urgent and a total of 150 cc of 300 mg/dl nonionic contrast can
be exceeded. Ideally, the most urgent study should be performed on one day and the
other study done on a separate day. A MRI/MRA study is an alternative when the 150
ml total dose of contrast cannot be exceeded in a particular patient.
A. CTA Head & Neck with Perfusion:
- CTA (Omnipaque 300) 80 2.8
- Perfusion (Omnipaque 370) 40 5