Multiband RF/MRI pulse design for multichannel transmitter

US10684337B2 · kind B2 · utility

Assignee

• Regents of the University of Minnesota · US

Inventors

• Xiaoping Wu · Shanghai, CN
• Pierre-Francois Van de Moortele · Minneapolis, US
• Sebastian Schmitter · Minneapolis, US
• Kamil Ugurbil · Minneapolis, US
• Edward Auerbach · Montgomery, US

Key dates

• Filing date: Jan 24, 2014
• Grant date: Jun 16, 2020
• Expiry date: May 18, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/3607
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for designing one or more multichannel, multiband radio frequency (“RF”) pulses for use with a magnetic resonance imaging (“MRI”) system is provided. The method includes determining a number of RF amplitude modulations and a number of RF phase modulations for each channel in a multichannel RF coil by minimizing an objective function that includes a complex-valued vector. The objective function also contains a system matrix that accounts for both a spatial sensitivity profile of each channel in the multichannel RF coil and a magnetic field map for each excitation band in the multiband RF pulse.