Eley Karen A, Watt-Smith Stephen R, Golding Stephen J
1 Department of Radiology, Addenbrookes Hospital, Cambridge, UK.
2 Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK.
Dentomaxillofac Radiol. 2017 Mar;46(3):20160407. doi: 10.1259/dmfr.20160407. Epub 2017 Jan 27.
OBJECTIVES: Three-dimensionally printed anatomical models are rapidly becoming an integral part of pre-operative planning of complex surgical cases. We have previously reported the "Black Bone" MRI technique as a non-ionizing alternative to CT. Segmentation of bone becomes possible by minimizing soft tissue contrast to enhance the bone-soft tissue boundary. The objectives of this study were to ascertain the potential of utilizing this technique to produce three-dimensional (3D) printed models. METHODS: "Black Bone" MRI acquired from adult volunteers and infants with craniosynostosis were 3D rendered and 3D printed. A custom phantom provided a surrogate marker of accuracy permitting comparison between direct measurements and 3D printed models created by segmenting both CT and "Black Bone" MRI data sets using two different software packages. RESULTS: "Black Bone" MRI was successfully utilized to produce 3D models of the craniofacial skeleton in both adults and an infant. Measurements of the cube phantom and 3D printed models demonstrated submillimetre discrepancy. CONCLUSIONS: In this novel preliminary study exploring the potential of 3D printing from "Black Bone" MRI data, the feasibility of producing anatomical 3D models has been demonstrated, thus offering a potential non-ionizing alterative to CT for the craniofacial skeleton.
目的:三维打印解剖模型正迅速成为复杂手术病例术前规划不可或缺的一部分。我们之前报道了“黑骨”磁共振成像(MRI)技术,作为计算机断层扫描(CT)的一种非电离替代方法。通过最小化软组织对比度以增强骨 - 软组织边界,骨的分割成为可能。本研究的目的是确定利用该技术制作三维(3D)打印模型的潜力。 方法:从成年志愿者和患有颅缝早闭的婴儿获取的“黑骨”MRI 进行三维渲染和 3D 打印。一个定制体模提供了准确性的替代标志物,允许在直接测量与使用两个不同软件包分割 CT 和“黑骨”MRI 数据集创建的 3D 打印模型之间进行比较。 结果:“黑骨”MRI 成功用于制作成人和婴儿的颅面骨骼 3D 模型。立方体体模和 3D 打印模型的测量显示出亚毫米级的差异。 结论:在这项探索从“黑骨”MRI 数据进行 3D 打印潜力的新颖初步研究中,已证明制作解剖学 3D 模型的可行性,从而为颅面骨骼提供了一种潜在的非电离 CT 替代方法。
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