MAPT and Alzheimer disease: Rinne et al. [27] recently performed a retrospective [11C]PiB PET study in 21 suspected iNPH patients with ICP monitoring, aiming to compare the [11C]PiB uptake with Aβ and p-tau lesions at biopsy, the lumbar and ventricular CSF Aβ, the response to the shunt (performed in 15/21 patients), and the final clinical diagnosis of AD.