o There is no CPT code for CT venogram; this is frequently ordered as a CTA and will specify in comment section to do a venogram – please pay very close attention to this! hen you are protocoling/ordering this study it is important to realize exactly what you are “getting” from the study. Revised Nov 20 2019 To visualize the intracranial veins and sinuses, the examination includes the region from the calvarial vertex down to the first vertebral body. CT of the brain (or spine) with stealth protocol. MSK CT; VASCULAR MR. Thoracic Aorta; Noncontrast Aorta; Subclavian Arteries; UE/Brachial Artery; Renal Arteries; Renal Arteries C-Abdominal Aorta; Mesenteric Arteries; Pelvic Arteries; Pelvic Veins; Run-off; Pelvic Congestion; Pulmonary MRA; NEURO MR. CT-venography is a simple and straight forward technique to demonstrate venous thrombosis. A CT venogram (CTV) is used to evaluate the venous drainage in the brain to look for venous pathology. Also, a plain X-ray of the head or skull is not helpful. The routine CT or MRI tests that are often done to evaluate a stroke or brain bleeds are often normal in cases of cerebral vein and cerebral venous sinus thrombosis. In the early stage there is non-enhancement of the thrombosed vein and in a later stage there is non-enhancement of the thrombus with surrounding enhancement known as empty delta sign, as discussed before. CT Scan Protocols, CT Protocols by Manufacturer- GE, Siemens, Phillips, Toshiba. It outlines CT protocols for diagnostic imaging currently applied to ou CT scanners. 1 mm axials for CT venogram. CT venography (CTV) is not a particularly well-validated technique, with most data derived from anecdotal experience. Dr. LP Riccelli works closely with OHSU CT techs in the art of creating optimal images from current technology. This places markers on the outside of the head to help surgeons accurately orient images to the patient. CT of the head with fiducials. o Please discuss each case with a body radiologist prior to performing Patient Position: Supine, feet down with arms above head Creates 3-D imaging models for surgical procedures. An MRI venogram , also referred to as an MRV, is an imaging test that produces images of the blood vessels in the head and neck area. The appropriate test to do is an MRI venogram (=MRV) or CT venogram (=CTV). Uses a special computer system for image-guided surgeries. 1 mm 3-D MIP (sagittal & coronal), and/or VRT reformats Filming 1) H30s kernel 2) H20s kernel 3) H30s, H70s kernels Comments: • Siemens HeadAngioVol package . MRI venogram. CT venography can be defined as a fast thin-section volumetric helical CT examination performed with a time-optimized bolus of contrast medium in order to enhance the cerebral venous system (, 5). This page is for Physicians, Inside and outside this institution, and CT Technologists. 4.5 or 5 mm axials for pre- and post-contrast brain. 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