Magnetic resonance system and operating method for RF pulse optimization

US7218113B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

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

Key dates

• Filing date: Jan 14, 2005
• Grant date: May 15, 2007
• Expiry date: Jan 30, 2025

Classification

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

Abstract

In a magnetic resonance system and an operating method therefor, a B1 field distribution of a radio-frequency antenna is measured in at least one part of a examination volume of the magnetic resonance system, and then the RF pulses emitted by the radio-frequency antenna are optimized, based on the determined B1 field distribution, for homogenization in a specific volume. An effective volume within the examination volume is determined beforehand for each applied RF pulse and, based on the determined B1 field distribution, the appertaining RF pulse is individually adjusted such that the B1 field is homogenized within the effective volume of the RF pulse.