NMR imaging allow specific study of contrast variations due to intravascula
r agents. It is possible to measure regional cerebral blood volume (rCBV).
In brain tumor, this parameter allow to characterize tumoral vascularisatio
n and blood brain barrier lesions. We use today 1(st) pass bolus technic. E
asy to perform in clinical practice, it is useful for differential diagnosi
s, prebiopsic planning and follow up of lesions. That should be particularl
y interesting to evaluate the anti-angiogenic treatment efficiency.