Application Of 3D Printing Technology Assist CT Vascular Reconstruction In Key-hole Location Of MVD Surgery

Objective To investigate the clinical application value of 3D slicer in processing cerebral computer tomography venography(CTV)images and in making guide plate use for microvascular decompression craniotomy.Methods A total of 25 patients who received microvascular decompression surgery were prospectively enrolled from October 2018 to January 2020 in our hospital.For all patients conforming to inclusion criteria made preoperative CTV examination.Exporting image data and using 3D slicer post-processed it 、making guide plate and printing it.We get into the operating room with guide plate and wear it for patients after general anesthesia,inject a little methylene blue through the puncture hole for intraoperative localization of "key hole" to guide the craniotomy.Basing on the actual situation in operation to verify the exactness of the position.Results All the 25 patients underwent craniotomy successfully.The "key hole" was precisely located at transverse-sigmoid sinus junction.The average time of osteoplasty was 20 minutes.No venous sinus rupture occurred in the operation and no related postoperative complications occurred.Therefore,the location was reliable and the effect was perfect.Conclusion The 3D slicer was used to post-process CTV images and make guide plate for the positioning of "key holes" in the retrosigmoid sinus approach,which was accurate and a foundation for the further clinical application of 3D printing technology with strong operability and practicability.