RF transmitter arrangement for an MR system, and method for determining a setting parameter therefor

US7221162B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Thorsten Feiweier · Peising, DE
• Ralph Oppelt · Uttenreuth, DE
• Wolfgang Renz · Erlangen, DE
• Markus Vester · Koblenzer Straße, DE

Key dates

• Filing date: Nov 19, 2004
• Grant date: May 22, 2007
• Expiry date: Nov 19, 2024

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/5612
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A radio frequency transmitter arrangement for a magnetic resonance apparatus has a distribution unit and an antenna unit, wherein the antenna unit, to generate radio frequency fields, is fashioned in at least two orthogonal modes, and the distribution unit is fashioned for the division of an RF transmission signal into at least two mode feed signals. At least one adjustment unit is provided to adjust the amplitude and/or phase of one of the mode feed signals and is connected with the antenna unit such that each of the mode feed signals generates a radio frequency field in one of the modes. A multiple transmitter arrangement has at least two radio frequency transmitter arrangements and at least two 180° hybrids. A method is provided to determine at least one setting parameter of the adjustment unit.