File:Acute subarachnoid hemorrhage and accessory anterior cerebral artery (Radiopaedia 69231-79009 Coronal C+ arterial phase 65).jpg

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Acute_subarachnoid_hemorrhage_and_accessory_anterior_cerebral_artery_(Radiopaedia_69231-79009_Coronal_C+_arterial_phase_65).jpg ‎(600 × 600 pixels, file size: 27 KB, MIME type: image/jpeg)

Summary:

Description
  • Radiopaedia case ID: 69231
  • Image ID: 49959028
  • Image stack position: 65/87
  • Plane projection: Coronal
  • Aux modality: C+ arterial phase
  • Study findings: CT angiography demonstrates variant anatomy of the anterior circulation with an accessory ACA that arises from and courses parallel to the right ACA. In addition, there is aneurysmal dilatation at the origin of the accessory artery in the region of the right A1/proximal A2 measuring 2.5 mm in diameter, thought to be the culprit of the acute subarachnoid hemorrhage. The left ACA is seen separately with no anterior communicating artery between the two systems. No other focal aneurysmal disease.
  • Modality: CT
  • System: Vascular
  • Findings: Acute subarachnoid hemorrhage is seen within the bilateral Sylvian fissures, temporal lobes, peri-mesencephalic cisterns, suprasellar cistern and interhemispheric fissure. The temporal horns of the lateral ventricles are prominent which is suggestive of early hydrocephalus.
Date Published: 3rd Jul 2019
Source https://radiopaedia.org/cases/acute-subarachnoid-haemorrhage-and-accessory-anterior-cerebral-artery
Author Madeleine Scicchitano
Permission
(Permission-reusing-text)		 http://creativecommons.org/licenses/by-nc-sa/3.0/

Licensing:

Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0)

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