Insights Into the Pathophysiology of Neurovascular Uncoupling in Patients with Brain Lesions.

"11 minutes of Functional MRI alternating breathing Air-Room and gaz mix (5%CO2 21%O2 74%N2).~All procedure are acquired simultaneously on a single acquisition on the PET/MRI camera in the institution."

"Some patients who did not benefit from a FDG-PET in their clinical evaluation or more than 1 month before the inclusion in the present study will be ask to also undergo a brain FDG-PET , the dose is set at 2 Mega becquerel per Kg.~All procedure are acquired simultaneously on a single acquisition on the PET/MRI camera in the institution."

"Patient will benefit Different anatomical sequence of acquisition listed here : T1 , T1 with contrast agent (gadovist) , T2 flair , T2 and DSC (Dynamic susceptibility contrast) , and Time Of Flight .~All procedure are acquired simultaneously on a single acquisition on the PET/MRI camera in the institution."