This is an education resource only. Ordering of all procedure codes on this website are subject to the Canberra Health Services guidelines for imaging orders.
CT VENOGRAM BRAIN
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INDICATIONS (1-5)
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Known or suspected cerebral venous thrombosis
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Investigation of preoperative anatomy - particularly, posterior fossa surgery to assess sigmoid sinus compression
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Venous vascular malformations e.g. AVM
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Sinus stenosis or occlusion secondary to tumour
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Papilledema on ophthalmoscopy
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Suspicion of idiopathic intracranial hypertension (IIH) / elevated CSF opening pressure
PATHOLOGY DEMONSTRATED (5,6)
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Dural venous sinus thrombosis
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Thrombosis re-canalisation
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Sinus stenosis or occlusion secondary to tumour invasion (e.g. meningioma)
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Venous vascular malformations e.g. AVM
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Idiopathic intracranial hypertension
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Anatomical variants such as sinus hypoplasia and aplasia, arachnoid granulations, sinus duplication or fenestration
PATIENT PREPARATION
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Patient able to lie still for ten minutes
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Not claustrophobic (sedation may be given)
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Cognitively capable of following basic instructions
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Metal artefacts removed from the region of interest
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No respiratory distress when lying supine
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Not allergic to Iodine based Contrast
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No known kidney disease (EGFR below 30 as per RANZCR), however, acute setting consultant may sign to continue with poor renal function
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No hyperthyroidism, may induce thyroid storm
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Patient to have 18G cannula in anterior cubital fossa to allow a 7ml/s flow rate (20G cannula acceptable if flushing to 5ml/s)
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Preferably patient fasted for 4 hours
ANATOMY INCLUDED
CT Brain - Non Contrast (Axial)
CT Venogram Head (Axial)
CT Brain - Non Contrast (Coronal)
CT Venogram Head (Coronal)
CT Brain - Non Contrast (Sagittal)
CT Venogram Head (Sagittal)
REFERENCES
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Radiopaedia. CT Head. [Internet]. 2010 [updated 01 Dec 2021, cited 23 Nov 2021]. Available from https://radiopaedia.org/articles/ct-head
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Radiopaedia. CT Cerebral Venography technique. [Internet]. 2016. [updated 19 Sep 2021, accessed 23 Nov 2021]. Available from https://radiopaedia.org/articles/ct-cerebral-venography-technique
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American College of Radiology (ACR). Appropriateness Criteria. [Internet]. 2022 [Updated 2021, cited 23 Nov 2021]. Available from https://www.acr.org/Clinical-Resources/ACR-Appropriateness-Criteria
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Johns Hopkins Medicine. Venogram. [Internet]. 2021. [updated 2021, cited on 23 Nov 2021]. Available from https://www.hopkinsmedicine.org/health/treatment-tests-and-therapies/venogram
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Radiology Assistant. Cerebral Venous Sinus Thrombosis. [Internet]. 2010. [updated 21 Oct 2010, cited 3 Jan 2022]. Available from https://radiologyassistant.nl/neuroradiology/sinus-thrombosis/cerebral-venous-thrombosis
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Eisenberg RL., Johnson NM. Comprehensive Radiographic Pathology. 5th Edition. Elsevier Mosby, 2012.