Wearable Loops for Unobtrusive Electromagnetic Detection of Joint Effusion
Wearable Loops for Unobtrusive Electromagnetic Detection of Joint Effusion
复制标题
用于关节积液的不显眼电磁检测的可穿戴环
DOI：
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
A. Kiourti
中科院分区：
文献类型：
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作者：
Zeke Z. Dalisky;Vigyanshu Mishra;A. Kiourti
关节积液与关节内或周围的滑液积聚有关。目前最先进的医学成像方法，如X射线，超声和磁共振成像（MRI）可以提供高分辨率的图像，但资源密集型，并限于专门的医疗设施，防止他们被用于长期，连续和实时监测。在这项工作中，我们提出了一种替代的，可穿戴的方法来检测关节积液，解决这些缺点。该方法依赖于监测在关节区域附近围绕肢体放置的两个导电回路之间的传输系数（S21）的变化。使用简化的臂渗出模型的电磁模拟，S21的幅度/相位和渗出半径之间呈现出明显的趋势。特别是，对于最佳设计，可以检测到从1到3 cm的球形渗出半径的0.5 cm变化，幅度的最小要求S21精度为1.02 dB或/和相位的最小要求S21精度为13.50°。这种方法的意义在于早期发现和易于治疗这种医学状况。
Joint effusion is associated with synovial fluid build-up in or around a joint. Current state-of-the-art medical imaging methods such as X-ray, ultrasound, and Magnetic Resonance Imaging (MRI) can provide high-resolution images but are resource-intensive and limited to specialized medical facilities, preventing them from being used for long-term, continuous and real-time monitoring. In this work, we propose an alternative, wearable method for detecting joint effusion which addresses these shortcomings. The method relies on monitoring changes in the transmission coefficient (S21) between two conducting loops placed around the limb near the joint region. Using electromagnetic simulations on a simplified arm-effusion model, a clear trend is presented between the magnitude/phase of S21 and effusion radius. Particularly, for the best design, 0.5-cm variations from 1 to 3 cm in spherical effusion radius can be detected with a minimum required S21 precision of 1.02 dB for magnitude or/and 13.50° for phase. Significance of this approach lies in early stage detection and ease of treatment for such medical conditions.