MR device with distribution network

US10162024B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Ludwig Eberler · Dresden, DE
• Jürgen Nistler · Erlangen, DE

Key dates

• Filing date: Feb 9, 2016
• Grant date: Dec 25, 2018
• Expiry date: Mar 23, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/5659
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An MR device has at least one distribution network for distributing an electrical input signal (to a number of feeding points of an MR antenna. The distribution network has at least one first signal output and one second signal output connected to a node, a first phase-shifting element disposed between the node and the first signal output, and a second phase-shifting element disposed between the node and the second signal output. The first phase-shifting element and the second phase-shifting element create a different phase shift, and the first phase-shifting element and the second phase-shifting element are embodied as electrical lines of different length. The distribution network is applicable, for example, to feeding signals to a body coil of the MR device, especially a so-called birdcage antenna.