Neurological Surgery No Shinkei Geka Volume 44, Issue 8 (August 2016)

Rapid 3-Dimensional Models of Cerebral Aneurysm for Emergency Surgical Clipping Takehiko KONNO 1 , Toshihiro MASHIKO 1 , Hirofumi OGUMA 1 , Naoki KANEKO 1 , Keisuke OTANI 1,2 , Eiju WATANABE 1 1Department of Neurosurgery, Jichi Medical University 2Department of Neurosurgery, Aomori Prefectural Central Hospital Keyword: subarachnoid hemorrhage , cerebral aneurysm , emergency clipping , three-dimensional printing , rapid prototyping pp.651-660
Published Date 2016/8/10
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 We developed a method for manufacturing solid models of cerebral aneurysms, with a shorter printing time than that involved in conventional methods, using a compact 3D printer with acrylonitrile-butadiene-styrene(ABS)resin. We further investigated the application and utility of this printing system in emergency clipping surgery.

 A total of 16 patients diagnosed with acute subarachnoid hemorrhage resulting from cerebral aneurysm rupture were enrolled in the present study. Emergency clipping was performed on the day of hospitalization. Digital Imaging and Communication in Medicine(DICOM)data obtained from computed tomography angiography(CTA)scans were edited and converted to stereolithography(STL)file formats, followed by the production of 3D models of the cerebral aneurysm by using the 3D printer.

 The mean time from hospitalization to the commencement of surgery was 242 min, whereas the mean time required for manufacturing the 3D model was 67 min. The average cost of each 3D model was 194 Japanese Yen. The time required for manufacturing the 3D models shortened to approximately 1 hour with increasing experience of producing 3D models. Favorable impressions for the use of the 3D models in clipping were reported by almost all neurosurgeons included in this study.

 Although 3D printing is often considered to involve huge costs and long manufacturing time, the method used in the present study requires shorter time and lower costs than conventional methods for manufacturing 3D cerebral aneurysm models, thus making it suitable for use in emergency clipping.

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Neurological Surgery 脳神経外科
44巻8号 (2016年8月)
電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院