Objective To observe the application of three-dimensional cranial CT reconstruction in craniotomy of acoustic neuroma through suboccipital retrosigmoid approach.Methods Clinical and imaging data of 12 patients with acoustic neuroma who underwent retrosigmoid approach craniotomy were retrospectively analyzed.On the medial and lateral views of 3D skull,the transverse-sigmoid sinus junction(TSSJ)was marked first,and then the distance between the marking point and the vertex and asterion of the digastric groove was measured.During the operation,two preoperatively measured distances were used as the radius,and the vertex and asterion of the digastric groove as the dots to draw a circle.The crossing point of the two circles was the"key-hole".Results The margin of TSSJ was successfully exposed in each case,and no venous sinus was damaged during operation.Postoperative CT showed good restoration of bone flaps.Conclusion 3D cranial CT reconstruction is simple and rapid for determining the position of TSSJ.Its use can avoid venous sinus injury and reduce bone defect.
关键词
CT三维重建/横窦与乙状窦交界处/听神经瘤
Key words
3D CT reconstruction/transverse-sigmoid sinus junction/acoustic neuroma
维普
万方数据