Accuracy Verification of Magnetic Resonance Imaging (MRI) Technology for Lower-Limb Prosthetic Research: Utilising Animal Soft Tissue Specimen and Common Socket Casting Materials
Accuracy Verification of Magnetic Resonance Imaging (MRI) Technology for Lower-Limb Prosthetic Research: Utilising Animal Soft Tissue Specimen and Common Socket Casting Materials
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DOI：
10.1100/2012/156186
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发表时间：
2012-01-01
影响因子：
--
通讯作者：
Buis, Arjan
中科院分区：
文献类型：
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作者：
Safari, Mohammad Reza;Rowe, Philip;Buis, Arjan
利用MRI技术可以量化下肢假肢窝的形状和体积一致性。此外，残肢的MRI图像可以作为CAD-CAM技术和有限元研究的输入数据。然而，当使用套筒铸造材料时，MRI的准确性必须加以定义。使用了6个46毫米厚的动物腿横截面。三个标本用巴黎石膏（POP）包裹，另外三个用市售的硅胶界面衬垫包裹。利用MRI技术获得数据，然后将分割后的图像与相应的卡尺测量、摄影成像和水悬浮技术进行比较。MRI测量结果与实际直径、表面积和体积测量结果密切相关。结果表明，所选择的扫描参数和半自动分割方法在考虑临床意义形状和体积波动限制的情况下，对于残肢体积和截面积测量是足够的。
Lower limb prosthetic socket shape and volume consistency can be quantified using MRI technology. Additionally, MRI images of the residual limb could be used as an input data for CAD-CAM technology and finite element studies. However, the accuracy of MRI when socket casting materials are used has to be defined. A number of six, 46 mm thick, cross-sections of an animal leg were used. Three specimens were wrapped with Plaster of Paris (POP) and the other three with commercially available silicone interface liner. Data was obtained by utilising MRI technology and then the segmented images compared to corresponding calliper measurement, photographic imaging, and water suspension techniques. The MRI measurement results were strongly correlated with actual diameter, surface area, and volume measurements. The results show that the selected scanning parameters and the semiautomatic segmentation method are adequate enough, considering the limit of clinical meaningful shape and volume fluctuation, for residual limb volume and the cross-sectional surface area measurements.