用于磁心图去噪检测的平面安装式 SQUID 全张量模块

IF 1.3 3区 物理与天体物理 Q4 PHYSICS, APPLIED
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引用次数: 0

摘要

磁肠图(MENG)是一种功能成像方法,在无创诊断肠道疾病方面具有巨大的临床潜力。在测量 MENG 时,心脏伪影是一个很强的生物干扰源。在绕线 SQUID 梯度仪的基础上,我们为 MENG 系统构建了一个平面安装的全张量补偿模块,在抑制环境噪声的同时获取心脏伪影,从而在不增加外部心电图记录通道的情况下对 MENG 信号进行去噪。从全张量补偿模块的输出中回归出心脏伪影,从而对 MENG 测量进行去噪。使用该模块,信噪比比原始数据高出约 70 dB。最后,36 点阵列 MENG 信号检测成功,空肠慢波频率(SWF)等高线图与空肠区域(小肠的一部分)一致。这种方法既节约了成本,又避免了心电图设备带来的新的电磁干扰。它将为 MENG 系统快速应用于临床奠定良好的基础。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A planar mounted SQUID full-tensor module for magnetoenterogram denoising detection

Magntoenterogram (MENG) is a functional imaging method with great clinical potential for non-invasive diagnosis of intestinal diseases. In measurements of MENG, the cardiac artifacts are a strong biological source of interference. Based on wire-wound SQUID gradiometers, we constructed a planar mounted full-tensor compensation module for MENG system, which can obtain cardiac artifacts while suppressing ambient noise, so as to denoise MENG signals without increasing external ECG recording channels. The cardiac artifacts are regressed out from the full-tensor compensation module outputs, which can denoise the MENG measurements. Using this module, the SNR is about 70 dB better than the raw data. At last, 36-point array MENG signals were detected successfully and the contour map of jejunal slow-wave frequency (SWF) was consistent with the jejunal area (one part of the small intestine). This method will save costs and avoid the new electromagnetic interferences introduced by ECG equipment. It will lay a good foundation for the rapid clinical application of the MENG system.

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来源期刊
CiteScore
2.70
自引率
11.80%
发文量
102
审稿时长
66 days
期刊介绍: Physica C (Superconductivity and its Applications) publishes peer-reviewed papers on novel developments in the field of superconductivity. Topics include discovery of new superconducting materials and elucidation of their mechanisms, physics of vortex matter, enhancement of critical properties of superconductors, identification of novel properties and processing methods that improve their performance and promote new routes to applications of superconductivity. The main goal of the journal is to publish: 1. Papers that substantially increase the understanding of the fundamental aspects and mechanisms of superconductivity and vortex matter through theoretical and experimental methods. 2. Papers that report on novel physical properties and processing of materials that substantially enhance their critical performance. 3. Papers that promote new or improved routes to applications of superconductivity and/or superconducting materials, and proof-of-concept novel proto-type superconducting devices. The editors of the journal will select papers that are well written and based on thorough research that provide truly novel insights.
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