磁共振成像的光学前置放大与探测。

Magnetic resonance imaging with optical preamplification and detection.

机构信息

Niels Bohr Institute, University of Copenhagen, København, Denmark.

Department of Health Technology, Technical University of Denmark, Lyngby, Denmark.

出版信息

Sci Rep. 2019 Dec 3;9(1):18173. doi: 10.1038/s41598-019-54200-3.

DOI:10.1038/s41598-019-54200-3

PMID:31796770

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6890707/

Abstract

Magnetic resonance (MR) imaging relies on conventional electronics that is increasingly challenged by the push for stronger magnetic fields and higher channel count. These problems can be avoided by utilizing optical technologies. As a replacement for the standard low-noise preamplifier, we have implemented a new transduction principle that upconverts an MR signal to the optical domain and imaged a phantom in a clinical 3 T scanner with signal-to-noise comparable to classical induction detection.

摘要

磁共振（MR）成像是基于传统电子学的，但随着磁场强度和通道数量的不断提高，传统电子学正面临越来越大的挑战。利用光学技术可以避免这些问题。我们用新的转换原理替代了标准的低噪声前置放大器，该原理将 MR 信号上转换到光域，并在临床 3T 扫描仪中对一个模拟体模进行了成像，其信号噪声比可与经典感应检测相媲美。