Magnetic resonance apparatus with excitation antennae system

US6828790B2 · kind B2 · utility

Assignee

• KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

• Ulrich Katscher · Norderstedt, DE
• Peter Boernert · Hamburg, DE
• Johan Samuel Van Den Brink · Meteren, NL

Key dates

• Filing date: Aug 20, 2002
• Grant date: Dec 7, 2004
• Expiry date: Aug 20, 2022

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/5611
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A magnetic resonance imaging system comprises an excitation antennae system (13,16) including several antennae for emitting an RF-excitation field [B1(t)]. An activation control unit (ACU) is coupled to the excitation antennae system to activate the excitation antennae system. Individual antennae are activated to simultaneously emit separate RF-excitation constituents [Bn(t)]. The RF-excitation constituents have different activation distributions over k-space. and the time required for the RF-excitation is short even for complex spatial excitation patterns.