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首页> 外文期刊>International Journal of Microwave and Wireless Technologies >A multiport vector network analyzer with high-precision and realtime capabilities for brain imaging and stroke detection
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A multiport vector network analyzer with high-precision and realtime capabilities for brain imaging and stroke detection

机译：一种具有高精度和实时功能的多端口矢量网络分析仪，用于大脑成像和中风检测

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摘要

Medical imaging is of great importance for patients affected by stroke. Since an early examination of the patient is necessary for successful recovery, there is room to improve the existing capabilities of analysis. Common systems like magnetic resonance imaging or computed tomography are precise, but stationary, and therefore, not ideally suited for the early analysis of stroke. The presented multiport vector network analyzer system uses electromagnetic tomography (EMT) as an alternative imaging technique. It consists of a network of distributed electronic sensor nodes which improve important parameters: the parallel measurement setup reduces the measurement time as low as 160 ms for a 200-port S-parameter matrix and it is capable of measuring signal levels down to -150 dBm. The electronics allow a compact, movable packaging, leading the way for future portable devices. The detection of stroke models was examined by test measurements of a phantom. The data was analyzed by the help of an inverse reconstruction algorithm. The possibility of building portable setups which can be even applied to patients inside an ambulance, makes EMT a suitable alternative for early stroke detection. It can help in shortening the recovery of patients, by providing an early analysis of the brain.
机译：医学成像对于中风患者至关重要。由于必须对患者进行早期检查才能成功康复，因此存在改善现有分析能力的空间。诸如磁共振成像或计算机断层扫描的常见系统非常精确，但是却是固定的，因此不适合用于卒中的早期分析。提出的多端口矢量网络分析仪系统使用电磁层析成像（EMT）作为替代成像技术。它包含一个改善重要参数的分布式电子传感器节点网络：并行测量设置可将200端口S参数矩阵的测量时间缩短至160 ms，并且能够测量低至-150 dBm的信号电平。电子设备允许紧凑，可移动的包装，为将来的便携式设备铺路。通过体模的测试测量检查了中风模型的检测。通过逆重构算法分析数据。建立甚至可以应用于救护车内患者的便携式装置的可能性使EMT成为早期中风检测的合适替代方案。通过提供大脑的早期分析，它可以帮助缩短患者的康复时间。

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