Abstract
Objective To explore the role of magnetic resonance tomographic angiography (MRTA) and neuroendoscope in determining the etiology of idiopathic trigeminal neuralgia. Methods Forty-nine patients with idiopathic trigeminal neuralgia, performed microvascular decompression were chosen; their clinical data, imaging data and operative data were retrospectively analyzed. All patients underwent preoperative MRTA; and before placing intraoperative Teflon, 30° neuroendoscope was applied for multi-angle exploration. Results Positive rate reached 77.6% under MRTA. All patients with positive results under MRTA were confirmed, without a false-positive. Neuroendoscope helped to determine whether the suspect vessels were the offending vessels in 4 patients. The total effective rate in 49 patients was 97.9%; pain disappeared in 47 patients (95.9%) and pain relieved in 1 (2.0%).Conclusion MRTA and neuroendoscope can help to determine the etiology of idiopathic trigeminal neuralgia, and improve the safety and effectiveness of MVD. Key words: Magnetic resonance tomographic angiography; Neuroendoscope; Trigeminal neuralgia
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