Tracy Butler, Julia Schubert, Nikolaos A Karakatsanis, Xiuyuan Hugh Wang, Ke Xi, Yeona Kang, Kewei Chen, Liangdong Zhou, Edward K Fung, Abigail Patchell, Abhishek Jaywant, Yi Li, Gloria Chiang, Lidia Glodzik, Henry Rusinek, Mony de Leon, Federico Turkheimer, Sudhin A Shah
Brain fluid clearance by pathways including the recently described paravascular glymphatic system is a critical homeostatic mechanism by which metabolic products, toxins, and other wastes are removed from the brain. Brain fluid clearance may be especially important after traumatic brain injury (TBI), when blood, neuronal debris, inflammatory cells, and other substances can be released and/or deposited. Using a non-invasive dynamic positron emission tomography (PET) method that models the rate at which an intravenously injected radiolabeled molecule (in this case 11 C-flumazenil) is cleared from ventricular cerebrospinal fluid (CSF), we estimated the overall efficiency of brain fluid clearance in humans who had experienced complicated-mild or moderate TBI 3-6 months before neuroimaging ( n = 7) as compared to healthy controls ( n = 9)...
2024: Neurotrauma reports