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一种用于无线磁共振成像的毫米波数字链路。

A Millimeter-Wave Digital Link for Wireless MRI.

作者信息

Aggarwal Kamal, Joshi Kiran R, Rajavi Yashar, Taghivand Mazhareddin, Pauly John M, Poon Ada S Y, Scott Greig

出版信息

IEEE Trans Med Imaging. 2017 Feb;36(2):574-583. doi: 10.1109/TMI.2016.2622251. Epub 2016 Oct 27.

Abstract

A millimeter (mm) wave radio is presented in this work to support wireless MRI data transmission. High path loss and availability of wide bandwidth make mm-waves an ideal candidate for short range, high data rata communication required for wireless MRI. The proposed system uses a custom designed integrated chip (IC) mm-wave radio with 60 GHz as radio frequency carrier. In this work, we assess performance in a 1.5 T MRI field, with the addition of optical links between the console room and magnet. The system uses ON-OFF keying (OOK) modulation for data transmission and supports data rates from 200 Mb/s to 2.5 Gb/s for distances up-to 65 cm. The presence of highly directional, linearly polarized, on-chip dipole antennas on the mm-wave radio along with the time division multiplexing (TDM) circuitry allows multiple wireless links to be created simultaneously with minimal inter-channel interference. This leads to a highly scalable solution for wireless MRI.

摘要

本文介绍了一种毫米波无线电,用于支持无线磁共振成像(MRI)数据传输。高路径损耗和宽带宽的可用性使毫米波成为无线MRI所需的短距离、高数据速率通信的理想选择。所提出的系统使用定制设计的集成芯片(IC)毫米波无线电,以60GHz作为射频载波。在这项工作中,我们在1.5T MRI场中评估性能,并在控制台室和磁体之间增加了光链路。该系统使用开关键控(OOK)调制进行数据传输,对于长达65厘米的距离,支持200 Mb/s至2.5 Gb/s的数据速率。毫米波无线电上高度定向、线性极化的片上偶极天线与时分复用(TDM)电路的存在,使得能够以最小的信道间干扰同时创建多个无线链路。这为无线MRI带来了高度可扩展的解决方案。

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