top of page

CT VENOGRAM BRAIN

INDICATIONS

INDICATIONS (1-5)

  • Known or suspected cerebral venous thrombosis

  • Investigation of preoperative anatomy - particularly, posterior fossa surgery to assess sigmoid sinus compression

  • Venous vascular malformations e.g. AVM

  • Sinus stenosis or occlusion secondary to tumour

  • Papilledema on ophthalmoscopy

  • Suspicion of idiopathic intracranial hypertension (IIH) / elevated CSF opening pressure

PATHOLOGY DEMONSTRATED (5,6)

Pathology Demonstrated

  • Dural venous sinus thrombosis

  • Thrombosis re-canalisation

  • Sinus stenosis or occlusion secondary to tumour invasion (e.g. meningioma)

  • Venous vascular malformations e.g. AVM

  • Idiopathic intracranial hypertension

  • Anatomical variants such as sinus hypoplasia and aplasia, arachnoid granulations, sinus duplication or fenestration

PATIENT PREPARATION

Patient Preparation

  • Patient able to lie still for ten minutes

  • Not claustrophobic (sedation may be given)

  • Cognitively capable of following basic instructions

  • Metal artefacts removed from the region of interest

  • No respiratory distress when lying supine

  • Not allergic to Iodine based Contrast

  • No known kidney disease (EGFR below 30 as per RANZCR), however, acute setting consultant may sign to continue with poor renal function

  • No hyperthyroidism, may induce thyroid storm

  • Patient to have 18G cannula in anterior cubital fossa to allow a 7ml/s flow rate (20G cannula acceptable if flushing to 5ml/s)

  • Preferably patient fasted for 4 hours

ANATOMY INCLUDED

axial non con.gif
CT Brain - Non Contrast (Axial)
axial.gif
CT Venogram Head (Axial)
coronal.gif
CT Brain - Non Contrast (Coronal)
coronal.gif
CT Venogram Head (Coronal)
sagittal.gif
CT Brain - Non Contrast (Sagittal)
sagittal.gif
CT Venogram Head (Sagittal)

REFERENCES

  1. Radiopaedia. CT Head. [Internet]. 2010 [updated 01 Dec 2021, cited 23 Nov 2021]. Available from https://radiopaedia.org/articles/ct-head

  2. 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

  3. 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

  4. 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

  5. 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

  6. Eisenberg RL., Johnson NM. Comprehensive Radiographic Pathology. 5th Edition. Elsevier Mosby, 2012.

ANATOMYINCLUDED
bottom of page