MRI is considered the modality of choice in demonstrating a characteristic “popcorn” or "berry" appearance of cavernous malformation.  It is a rim of signal loss due to hemosiderin, which demonstrates prominent blooming on susceptibility weighted sequences. T1 and T2 signal show variation in signal apperaance internally depending on the age of the blood produces and small fluid/ fluid levels  that may be evident. Cavernous malformation is angiographically occult and does not demonstrate arteriovenous shunting.