2024年6月28日 · CT cerebral venography (also known as a CTV head or CT venogram) is a contrast-enhanced examination with an acquisition delay providing an accurate detailed depiction of the cerebral venous system. NB: This article is intended to outline some general principles of protocol design.

Dural venous sinus thrombosis. Thrombosis re-canalisation. Sinus stenosis or occlusion secondary to tumour invasion (e.g. meningioma) Venous vascular malformations e.g. AVM

2020年1月21日 · This page is meant to discuss more about how to protocol a CT venogram (CTV) of the head. A CT venogram (CTV) is used to evaluate the venous drainage in the brain to look for venous pathology. WHAT DOES THIS STUDY ACTUALLY INCLUDE?

2022年7月6日 · Head and neck infections, including: Mastoiditis, sinusitis, otitis media. Meningitis, cerebral abscess/empyema. Mechanical causes: Traumatic brain injury (especially skull base fractures that cross venous sinuses). Post neurosurgical procedures, external ventricular drain, lumbar puncture.

16 slice CT scanners: non-helical axial slices only, no coronal or sagittal reformats recommended. Indications: aneurysm, subarachnoid hemorrhage, AVM. Foramen magnum to vertex, angled to exclude orbits. If a head angiogram is done in conjunction with a neck angiogram, please separate the head images and send to PACS a smaller field of view.

Scan a HEAD WO CONTRAST before CTA HEAD exam unless: Exam is ordered as Stereotactic for Surgery Planning; Patient has had a Head WO Contrast within the last 6 hours. The ordering Provider or Radiologist does not want it

2025年2月1日 · Cerebral venous thrombosis (CVT) (plural: thromboses) refers to the occlusion of venous channels in the cranial cavity, including dural venous thrombosis, cortical vein thrombosis and deep cerebral vein thrombosis. They often co-exist and the clinical presentation among them is very similar and non-specific.

CT venography (CTV) is not a particularly well-validated technique, with most data derived from anecdotal experience. For a variety of reasons, CTV has become the go-to imaging modality for a quick and efficient answer to most venous problems.

• CT venography (CTV) is a technique targeted to assess venous anatomy, determine venous patency & delineate collateral circulation • Non-invasive, simple protocols, wide anatomic coverage, short acquisition time, and ability to be combined with arterial-phase CTA

Radiologists do a remarkable number of scans that are normal (in spite of wildly unusual presentations or symptoms). Part of the skill in radiology is knowing when something is normal, and also what else can or should be done to check again (in this case, CTV).