Skull Base and Cerebrovascular Laboratory, University of California, San Francisco, California, USA.
Skull Base and Cerebrovascular Laboratory, University of California, San Francisco, California, USA; Department of Neurological Surgery, University of California, San Francisco, California, USA.
World Neurosurg. 2019 Sep;129:372-377. doi: 10.1016/j.wneu.2019.05.251. Epub 2019 Jun 7.
In this study we aim to evaluate the feasibility of creating volumetric models of highly intricate skull-base anatomy-previously not amenable to volumetric reconstruction-using endoscopic endonasal approaches.
Ten human cadaveric heads were dissected through the nasal corridor to expose anterior, middle, and posterior cranial fossi structures and the pterygopalatine and infratemporal fossi. A rigid endoscope with a 30° lens was used to capture the images. Subsequently, a photogrammetry software was used to align, smooth, and texturize the images into a complete 3-dimensional model.
An average of 174 photographs were used to construct each model (n = 10). In the end, we achieved high-definition stereoscopic volumetric models of the nasal corridor; paranasal fossae; and anterior, middle and posterior fossae structures that preserved structural integrity. Strategic points of interests were labeled and animated for educational use.
Endoscopic volumetric models represent a new way to depict the anatomy of the skull base; their use with 3-dimensional technologies could potentially improve the visuospatial understanding of narrow surgical corridors for education and surgical-planning purposes.
本研究旨在评估使用内镜经鼻入路创建先前无法进行容积重建的复杂颅底解剖结构容积模型的可行性。
通过鼻腔通道解剖 10 个人体头颅标本，以暴露前颅窝、中颅窝和后颅窝结构以及翼腭窝和颞下窝。使用具有 30°镜头的刚性内镜采集图像。随后，使用摄影测量软件将图像对齐、平滑并纹理化为完整的三维模型。
平均每个模型（n=10）使用 174 张照片构建。最终，我们成功构建了具有高清晰度立体容积的鼻腔通道、副鼻窦以及前、中、后颅窝结构模型，保持了结构完整性。对感兴趣的关键点进行标记和动画处理，用于教学用途。
内镜容积模型代表了描绘颅底解剖结构的新方法；与三维技术结合使用，有可能为教育和手术规划目的提高对狭窄手术通道的空间理解。
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