Size-Adaptive Occipital 18-Channel Receive-Only RF Coil for 3T MRI

IF 3 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Journal of Electromagnetics RF and Microwaves in Medicine and Biology Pub Date : 2024-10-08 DOI:10.1109/JERM.2024.3465354

William Mathieu;Milica Popović;Reza Farivar

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引用次数: 0

Abstract

The performance of a conformal occipital receive-only radio-frequency (RF) array is demonstrated at 3T. The ultimate aim of this larger coil is to improve whole-brain magnetic resonance imaging (MRI) regardless of a person's head size and shape. The occipital array contains 18-channels built on a 3D-printed 3-mm thick thermoplastic polyurethane (TPU) plate, which acts as a flexible substrate. To show the performance improvements of our design a comparative study was performed where three differently shaped phantoms were used when imaging by our occipital array then by a standard rigid 64-channel head product coil (posterior 40-channel section only). Signal-to-noise-ratio (SNR) and noise correlation performance were evaluated. Compared to the product coil, the flexible occipital array improved mean SNR by 2.8×. Noise correlation was comparable to the product coil. These results lead us to conclude that our design represents a viable approach to improve SNR for differently shaped heads and supports the feasibility of a larger 128-channel size-adaptable whole-head array currently in development.

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尺寸自适应枕骨18通道仅接收射频线圈用于3T MRI

在3T下演示了共形枕部仅接收射频（RF）阵列的性能。这种大线圈的最终目的是改善全脑磁共振成像（MRI），而不考虑人的头部大小和形状。枕部阵列包含18个通道，构建在3d打印的3毫米厚热塑性聚氨酯（TPU）板上，该板可作为柔性基板。为了展示我们设计的性能改进，我们进行了一项比较研究，其中使用我们的枕部阵列和标准刚性64通道头部产品线圈（仅后40通道部分）成像时使用了三种不同形状的幻影。评估了信噪比（SNR）和噪声相关性能。与产品线圈相比，柔性枕阵列的平均信噪比提高了2.8倍。噪声相关性与产品线圈相当。这些结果使我们得出结论，我们的设计代表了一种可行的方法来提高不同形状头部的信噪比，并支持目前正在开发的更大的128通道尺寸适应性全头阵列的可行性。

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

IEEE Journal of Electromagnetics RF and Microwaves in Medicine and Biology ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

5.80

自引率

9.40%

发文量