Fabric on fabric: A conductive fabric-based wearable coil using cutting plotter for MRI at 3T.

IF 3 3区医学 Q2 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Magnetic Resonance in Medicine Pub Date : 2025-09-02 DOI:10.1002/mrm.70051

Thejas Vishnu Ramesh, Sergio Martin-Moreno, Folk W Narongrit, Christopher J S Chang, Vitaliy L Rayz, Joseph V Rispoli

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引用次数: 0

Abstract

Purpose: Wearable coils fabricated using conductive threads have high resistance that limits SNR. The purpose of this work is to demonstrate the utility of conductive fabric as a coil conductor that can be fabricated using a cutting plotter.

Methods: A single-channel coil was developed by feeding a conductive fabric sheet into an automatic cutting plotter. The fabric coil was loaded on a spherical phantom to evaluate SNR and B₁ ⁺ homogeneity and compared with a single-channel conductive thread coil and a rigid printed circuit board (PCB) coil. A 14-channel wearable neck array was developed for structural imaging of the cervical spine and 4D flow MRI of the carotid arteries. The SNR from structural images and velocity-to-noise ratio (VNR) from flow images were compared with a 16-channel commercial coil.

Results: The single-channel conductive fabric coil provided 6.7% and 125.9% SNR increase when compared to the rigid PCB and conductive thread coils across 10 scan repetitions. The B₁ ⁺ field homogeneity was 96.4%, 1% higher than the rigid PCB and conductive thread coils. The wearable neck array demonstrated a 51.1% average SNR increase from the cervical spine images across three volunteers and a 12.0% VNR increase from the postprocessed 4D flow data when compared with the commercial 16-channel array.

Conclusion: The possibility of developing wearable coils using conductive fabric to enhance SNR in structural images and VNR in 4D flow images is demonstrated. The conductive fabric technique enables fabrication on commercial garments resulting in form-fitting wearable coils.

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织物上的织物：一种基于导电织物的可穿戴线圈，使用切割绘图仪在3T下进行MRI。

用途：使用导电螺纹制作的可穿戴线圈具有高电阻，限制信噪比。这项工作的目的是证明导电织物作为线圈导体的效用，可以使用切割绘图仪制造。方法：将导电织物片送入自动切割绘图仪，形成单通道线圈。将织物线圈加载在球形模体上以评估信噪比和B1 +均匀性，并与单通道导电螺纹线圈和刚性印刷电路板（PCB）线圈进行比较。开发了一种14通道可穿戴颈部阵列，用于颈椎结构成像和颈动脉4D血流MRI。比较了结构图像的信噪比和流动图像的速度噪声比（VNR）。结果：与刚性PCB和导电螺纹线圈相比，单通道导电织物线圈在10次扫描重复中提供了6.7%和125.9%的信噪比提高。B1 +场均匀性为96.4%，比刚性PCB和导电螺纹线圈高1%。与商用16通道阵列相比，可穿戴颈部阵列显示，3名志愿者颈椎图像的平均信噪比提高了51.1%，后处理4D血流数据的平均信噪比提高了12.0%。结论：利用导电织物开发可穿戴线圈增强结构图像的信噪比和4D血流图像的VNR的可能性。导电织物技术可以在商业服装上制造出合身的可穿戴线圈。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Magnetic Resonance in Medicine 医学-核医学

CiteScore

6.70

自引率

24.20%

发文量

376

审稿时长

2-4 weeks

期刊介绍： Magnetic Resonance in Medicine (Magn Reson Med) is an international journal devoted to the publication of original investigations concerned with all aspects of the development and use of nuclear magnetic resonance and electron paramagnetic resonance techniques for medical applications. Reports of original investigations in the areas of mathematics, computing, engineering, physics, biophysics, chemistry, biochemistry, and physiology directly relevant to magnetic resonance will be accepted, as well as methodology-oriented clinical studies.