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

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Appendix: 10 142 Revised 7/22/09 (Gentry/Ranallo) Direction and Naming of 2D-Reformations 1. Always do Bone 2D-Reformations before Soft Tissue 2D Reformations 2. Always do 2D-Reformations in this order: a. Axial b. Coronal c. Sagittal d. Oblique Sagittal 3. Always do 2D-Reformations in these directions a. Axial = Bottom to Top b. Coronal = Front to Back c. Sagittal = Right to Left d. Oblique Sagittal = Right to Left 4. Naming of 2D-Reconstructions a. Axial Bone = AX BONE b. Coronal Bone = CO BONE c. Sagittal Bone = SA BONE d. Right Oblique Bone = RT BONE e. Left Oblique Bone = LT BONE f. Axial Soft Tissue = AX ST g. Coronal Soft Tissue = CO ST h. Sagittal Soft Tissue = SA ST i. Right Oblique Soft Tissue = RT ST j. Left Oblique Soft Tissue = LT ST k. TB - Right Stenver’s = RT STENV l. TB - Right Pöschel = RT POSCH m. TB - Left Stenver’s = LT STENV n. TB - Left Pöschel = LT POSCH o. CTA - Right Carotid Bifurcation = RT Car p. CTA - Left Carotid Bifurcation = LT Car q. CTA - Right ICA Oblique = RT ICA r. CTA - Left ICA Oblique = LT ICA
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
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Adult Head: (Axial Mode) (Protocol
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CT Protocols: (Brain, ENT, Spine, Vascular) - Department of Radiology

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