Models of the vascular brain? -help!?

Question

Hi. I'm doing a project to determine cerebral blood flow using MRI. With this a contrast solution is injected and circulates through the brain bloodvessels. But I need to verify the results I get. Are there phantoms/models of the brain available? Could I make this myself - It should ofcourse be MR-compatable.
Do you have other ideas on how I can verify my MR-cerebral blood flow results?
Thanks! -please brain-storm with me: I'm happy with any answer. -Maybe a gardon hose -or connecting straws? ..

Answer 1

Discarded pipettes?

Syringes?

I'm trying to get some small diameters in there.