The first three categories are the AVMs, e.g.
Q: What are the 3 types of brain AVMs?
A: Pial, Dural, Mixed
(1) Pial
(2) Dural
(3) Mixed
(4) AV-fistulae
(5) Cavernous angiomas
(6) Capillary telangiectasias
(7) Developmental venous anomalies
(8) Vein of Galen malformations
(9) Venous varix
Q: What is a Hamartoma?
A: Tissues that normally belong in that organ in an abnormal arrangement/configuration.
Q: What are the vascular hamartomas?
A:
Developmental venous anomaly.
Capillary telangiectasia
Cavernous malformation/cavernoma
AVM
Q: What is the most common vascular hamartoma?
A: DVA
Q: What is the rationale for using MRA (over MRI) for detecting dural AVMs?
A: On MR the abnormal vessels are dark adjacent to dark dura/inner table.
On MRA the abnormal vessels are bright adjacent to dark dura/inner table.