RT Journal Article
SR Electronic
T1 MR Imaging of Papilledema and Visual Pathways: Effects of Increased Intracranial Pressure and Pathophysiologic Mechanisms
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 919
OP 924
DO 10.3174/ajnr.A3022
VO 34
IS 5
A1 Passi, N.
A1 Degnan, A.J.
A1 Levy, L.M.
YR 2013
UL http://www.ajnr.org/content/34/5/919.abstract
AB SUMMARY: Papilledema, defined as swelling of the optic disc, frequently occurs in the setting of increased ICP and in a variety of medical conditions, including pseudotumor cerebri, sinus thrombosis, intracerebral hemorrhage, frontal lobe neoplasms, and Chiari malformation. Noninvasive imaging of the ON is possible by using MR imaging, with a variety of findings occurring in the setting of papilledema, including flattening of the posterior sclera, protrusion of the optic disc, widening of the ONS, and tortuosity of the ON. Early recognition of papilledema and elevated ICP is of paramount importance for ensuring restoration of vision. Newer advanced MR imaging techniques such as fMRI and DTI may prove useful in the future to assess the potential effects of papilledema on retinal and visual pathway integrity. ICPintracranial pressureIIHidiopathic intracranial hypertensionONoptic nerveONSoptic nerve sheathSASsubarachnoid space