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Experimental Assessment of Real-Time Brain Stroke Monitoring via a Microwave Imaging Scanner
IEEE Open Journal of Antennas and Propagation Pub Date : 2022-07-21 , DOI: 10.1109/ojap.2022.3192884
David O. Rodriguez-Duarte 1 , Cristina Origlia 1 , Jorge A. Tobon Vasquez 1 , Rosa Scapaticci 2 , Lorenzo Crocco 2 , Francesca Vipiana 1
Affiliation  

This paper presents the experimental validation of a microwave imaging system for real-time monitoring of brain stroke in the post-acute stage. The system exploits a low-complexity sensing apparatus and a multi-frequency microwave imaging algorithm with a novel artifact removal feature. Phantoms of a homogeneous anthropomorphic head and an ellipsoidal non-static stroke mimicking target, varying gradually from 0 cm3 to 60 cm3, are employed for the experiments. The phantom and the evolving target are filled with appropriate alcohol-based mixtures to mimic the different dielectric properties of the relevant tissue. The microwave imaging scanner operates using a 22-antennas architecture formed by printed flexible antennas with a custom-made matching medium. The system provides 3-D images of the entire brain region, exploiting differential multi-view scattering measures and the distorted Born approximation to build a pre-computed imaging kernel. The results show the system’s capability to follow up the continuous progression of hemorrhage and ischemia zones with centimetric spatial resolution and to provide information on whether the stroke is growing or shrinking.

中文翻译:

通过微波成像扫描仪进行实时脑卒中监测的实验评估

本文介绍了用于实时监测急性后阶段脑卒中实时监测的微波成像系统的实验验证。该系统利用了一种低复杂度的传感装置和一种具有新的伪影去除功能的多频微波成像算法。同质拟人头部和椭圆形非静态中风模拟目标的体模,从 0 cm 3逐渐变化到 60 cm 3, 用于实验。幻影和不断发展的目标充满了适当的酒精混合物,以模拟相关组织的不同介电特性。微波成像扫描仪使用 22 天线架构运行,该架构由印刷柔性天线和定制匹配介质形成。该系统提供整个大脑区域的 3-D 图像,利用差分多视图散射测量和扭曲的玻恩近似来构建预先计算的成像内核。结果表明,该系统能够以厘米的空间分辨率跟踪出血和缺血区域的持续进展,并提供有关中风是增长还是缩小的信息。
更新日期:2022-07-21
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