Method for the control of a magnetic resonance system

US9547064B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Stephan Biber · Erlangen, DE
• Helmut Greim · Höchstadt an der Aisch, DE
• Juergen Nistler · Erlangen, DE
• Thorsten Speckner · Erlangen, DE

Key dates

• Filing date: Oct 4, 2012
• Grant date: Jan 17, 2017
• Expiry date: Sep 14, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/341
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for the control of a magnetic resonance system is provided. In a test phase before a magnetic resonance measurement, a test high-frequency pulse with several parallel individual high-frequency pulses is transmitted with a transmitter antenna arrangement over various different high-frequency transmitter channels. At lower transmitter power, the test high-frequency pulse generates essentially the same field distribution as an excitation high-frequency pulse to be transmitted during a subsequent magnetic resonance measurement. A high-frequency field generated by this test high-frequency pulse is measured in at least one area of a local pulse arrangement, and on the basis of the high-frequency field measured, a high-frequency field value that is to be anticipated at the local coil arrangement during the subsequent magnetic resonance measurement is determined. The control of the magnetic resonance system during a later magnetic resonance measurement includes taking the high-frequency field value into account.