• Kyung-Min Kim, Yoon Hwan Byun, Ho Kang, Min-Sung Kim, Jin-Wook Kim, Yong Hwy Kim, Chul-Kee Park, and Yun-Sik Dho.
• Department of Neurosurgery, Inha University Hospital, Inha University College of Medicine, Incheon, Korea.
• World Neurosurg. 2023 Jun 9.

BackgroundConventional 2-Dimensional magnetic resonance imaging-based neuronavigation systems can improve the maximal safe resection in brain tumor surgery but can be unintuitive. A 3-Dimensional (3D)-printed brain tumor model allows for a more intuitive and stereoscopic understanding of brain tumors and adjacent neurovascular structures. This study aimed to identify the clinical efficacy of a 3D-printed brain tumor model in presurgical planning by focusing on differences in the extent of resection (EOR).MethodsThirty two neurosurgeons (14 faculty members, 11 fellows, 7 residents) randomly selected the two 3D-printed brain tumor models from the 10 manufactured models and performed presurgical planning following a standardized questionnaire. To compare the 2-Dimensional magnetic resonance imaging-based planning results with the 3D-printed model-based planning results, we analyzed the changing patterns and characteristics of the EOR.ResultsOf 64 randomly generated cases, the resection goal changed in 12 cases (18.8%). When the tumor was located intra-axially, the surgical posture required a prone position, and when the neurosurgeon was dexterous in surgery, there was a higher rate of EOR changes. 3D-printed models 2, 4, and 10, which all represented tumors in the posterior of the brain, had high rates of changing EOR.ConclusionsA 3D-printed brain tumor model could be utilized in presurgical planning to effectively determine the EOR.Copyright © 2023 The Author(s). Published by Elsevier Inc. All rights reserved.

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