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  • Title: Imaging of the optic chiasm and retrochiasmal visual pathways.
    Author: Menjot de Champfleur N, Menjot de Champfleur S, Galanaud D, Leboucq N, Bonafé A.
    Journal: Diagn Interv Imaging; 2013 Oct; 94(10):957-71. PubMed ID: 23891029.
    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.
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