Imaging of the optic chiasm and retrochiasmal visual pathways - 23/10/13
Abstract |
The exploration of the chiasmal and retrochiasmal visual pathways is based on magnetic resonance imaging. A bitemporal hemianopsis suggests a lesion of the optic chiasm while homonymous lateral hemianopsis should lead to a search for a lesion of the retrochiasmal visual pathways. The causes of chiasmal impairment are mainly tumoral. The exploration protocol is based on MRI with T1-weighted sagittal sections, then T2- and T1-weighted coronal sections with and without injection. In case of a retrochiasmal syndrome, the MRI exploration protocol is a function of the type of occurrence of the deficiency and the context.
El texto completo de este artículo está disponible en PDF.Keywords : Brain, Cranial nerves, Orbits, MRI
Esquema
Vol 94 - N° 10
P. 957-971 - octobre 2013 Regresar al númeroBienvenido a EM-consulte, la referencia de los profesionales de la salud.