Preoperative plan of microvascular decompression for hemifacial spasm utilizing virtual reality technique
Tang Ke
Zhou Jing'an
Zhou Qing
Zhao Yaqun
Liu Ce
Abstract：Objective To evaluate curative effect of microvascular decompression for hemifacial spasm under the direction of virtual reality preoperative plans to observe the relation between responding vessel and facialacoustic nerve complex.Methods CT angiography and head MRI scans were performed in 33 cases suffering hemifacial spasm.Image data was putted into Vitrea virtual reality system to reconstruct and simulate exposure of facial-acoustic nerve complex through suboccipito-retrosigmoidal approach.Spatial relationship between responding vessel and facial nerve was identified to direct microvascular decompression.Patients without preoperative plans were enrolled as control group.Results Visualization effects of spatial relation between facial nerve and responding vessels were good.Anterior inferior cerebellar artery was identified as a responding vessel for all cases in two groups.Cohen grade zero in two groups were different with statistical significance [100.0％ (33 cases)vs 85.2％ (23 cases)] (P =0.036).Statistical significance was not shown regarding incidence of complication [0 vs 11.1％ (3 cases)] (P =0.085).Conclusion Virtual reality preoperative plan is helpful for displaying spatial relation between facial nerve and responding vessel clearly and objectively,which ensures safe and effective results.
Keywords：Hemifacial spasmVirtual realityPreoperative planRetrosigmoidal approach
Publication Date：2014-01-30
Online Publishing Date：2026-09-14(First online date of this platform, not the publication date of the document)
Pages：4( 43-46 )