首页> 外国专利> MRI system, receiving device for an MRI system and method for obtaining an MR signal in an MRI system

MRI system, receiving device for an MRI system and method for obtaining an MR signal in an MRI system

机译：核磁共振成像系统，核磁共振成像系统的接收装置以及在核磁共振成像系统中获得核磁共振信号的方法

页面导航

摘要
著录项
相似文献

摘要

In an MRI system, a receiving device is in a strong alternating magnetic field. This makes it difficult to operate in the receiving device, other complex electrical circuits. Also voluminous electrical circuits make the receiving device unwieldy, which makes it difficult in particular a study of living patients. An object underlying the invention is to simplify the circuit complexity. The MRT system (10) according to the invention has at least one receiving device (12) for an MR-HF signal. The receiving device (12) comprises a receiving coil element (28) for receiving the MR-HF signal, an optical modulator (40) in which an electrical control input (38) is coupled to the receiving coil element (28) and an optical output (48 ) for outputting an output signal (Lo) of the modulator (40). The optical modulator (40) forms an optical demodulation device for the MR-RF signal. For this purpose, it is coupled via its optical input (42) to a laser light source (20) which is designed to generate a laser light (LI) whose luminous intensity varies periodically at a predetermined frequency (Fosc).

机译：在MRI系统中，接收设备处于强交变磁场中。这使得难以在接收装置，其他复杂的电路中进行操作。同样，大量的电路使接收装置笨拙，这尤其使得对活着的患者的研究变得困难。本发明所基于的目的是简化电路复杂度。根据本发明的MRT系统（10）具有至少一个用于MR-HF信号的接收设备（12）。接收装置（12）包括用于接收MR-HF信号的接收线圈元件（28），光调制器（40），其中电控制输入端（38）耦合到接收线圈元件（28）。输出（48），用于输出调制器（40）的输出信号（Lo）。光学调制器（40）形成用于MR-RF信号的光学解调装置。为此，它通过其光输入（42）耦合到激光源（20），该激光源被设计为产生其光强以预定频率（Fosc）周期性变化的激光（LI）。

著录项

公开/公告号DE102011086561B4

专利类型
公开/公告日2013-06-13

原文格式PDF
申请/专利权人 SIEMENS AKTIENGESELLSCHAFT;
展开▼

申请/专利号DE20111086561
发明设计人 STEFAN POPESCU;
展开▼

申请日2011-11-17
分类号G01R33/32;G01R33/3415;A61B5/055;
国家 DE
入库时间 2022-08-21 16:22:20

相似文献

专利
外文文献
中文文献