Details

Autor(en) / Beteiligte

• Balcer, Laura J.
• Galetta, Steven L.
• Bagley, Linda J.
• Pakola, Stephen J.

Titel

Localization of Traumatic Oculomotor Nerve Palsy to the Midbrain Exit Site by Magnetic Resonance Imaging

Ist Teil von

• American journal of ophthalmology, 1996-09, Vol.122 (3), p.437-439

Ort / Verlag

New York, NY: Elsevier Inc

Erscheinungsjahr

1996

Quelle

MEDLINE

Beschreibungen/Notizen

• To present the magnetic resonance imaging findings for a patient with traumatic oculomotor nerve injury. We examined a patient with a right pupil-involving oculomotor nerve palsy after severe closed head trauma. Magnetic resonance imaging of the brain demonstrated marked signal hypointensity on gradient-echo T2*-weighted images consistent with hemorrhage at the midbrain exit site of the right oculomotor nerve. Distal fascicular damage or partial rootlet avulsion is a mechanism of injury in some traumatic oculomotor nerve palsies. Gradient- echo T2* -weighted magnetic resonance imaging is the most sensitive method to detect hemorrhagic changes associated with shearing injury.