This figure illustrates the types of aneurysms that are associated with a brain AVM
- A. distal flow-related aneurysm
- B. distal flow-related aneurysm
- C. nidal aneurysm
- D. proximal flow-related aneurysm
- E. non-flow-related aneurysm
- Aneurysms – saccular luminal dilatations of the parent feeding vessel
- Flow-related aneurysm – an aneurysm that lies on a pathway of an artery supplying the AVM
- Nidal aneurysm – aneurysm that is contiguous with the vascular mass include in the AVM size measurement
- Proximal aneurysms – located on the vessel or branch points of the circle of Willis or proximal to it (i.e. ICA, ACA, PPCA, A1 or P1, VA or BA)
- Distal aneurysms – more distal locations beyond the circle of Willis.
“Reporting Terminology For Brain Arteriovenous Malformation Clinical And Radiographic Features For Use In Clinical Trials”. Stroke 32.6 (2001): 1430-1442. Web.