Fig. 6 .

There are 3 categories of MRI vessel patterns in Group 3 medulloblastoma found in both rodent xenograft models and in humans: organized, diffuse microvascular, and heterogeneous. (A) Examples of each category in rodents (top row) as noted on SW MRI using ferumoxytol as an intravascular contrast agent. Examples of each category in patients with Group 3 medulloblastoma (bottom row) as noted on GRE MRI without contrast. White circles highlight tumor. (B) Kaplan–Meier survival curve of intracranial Group 3 xenograft models.