London Health Science Centre, Victoria Hospital, London, Canada.
Int J Med Robot. 2021 Apr;17(2):e2220. doi: 10.1002/rcs.2220. Epub 2021 Jan 15.
This study will examine the differences between human lumbar vertebrae, three-dimensional (3D) scans of these bones, 3D models based on 'Black-bone' magnetic resonance imaging (MRI) scans, and 3D-printed models.
3D mesh models were created from the "Black-bone" MRI data from two cadaveric human spines, and then 3D printed. Four models were analysed and compared: anatomic bones, 3D-scanned models, MRI models and 3D-printed models.
There was no significant difference between when comparing the average of all measurements between all model types (p = 0.81). The mean dice coefficient was 0.91 (SD 0.016) and the mean Hausdorff distance was 0.37 mm (SD 0.04 mm) when comparing the MRI model to the 3D-scanned model. The mean volumes for the MRI model and the 3D scanned model were 10.42 and 10.04 ml (p = 0.085), respectively.
The 'Black-bone' MRI could be a valid radiation-free alternative to computed tomography for the 3D printing of lumbar spinal biomodels.
本研究将比较人腰椎、这些骨骼的三维（3D）扫描、基于“黑骨”磁共振成像（MRI）扫描的 3D 模型和 3D 打印模型之间的差异。
从两名尸体人类脊柱的“黑骨”MRI 数据中创建 3D 网格模型，然后进行 3D 打印。分析和比较了四种模型：解剖骨骼、3D 扫描模型、MRI 模型和 3D 打印模型。
当比较所有模型类型的所有测量值的平均值时，没有显著差异（p=0.81）。当比较 MRI 模型与 3D 扫描模型时，平均骰子系数为 0.91（标准差 0.016），平均 Hausdorff 距离为 0.37 毫米（标准差 0.04 毫米）。MRI 模型和 3D 扫描模型的平均体积分别为 10.42 和 10.04 毫升（p=0.085）。
“黑骨”MRI 可以作为腰椎生物模型 3D 打印的一种无辐射的替代 CT 方法。
