System and method for gradient-modulated sweep imaging with fourier transformation magnetic resonance imaging

US10698053B2 · kind B2 · utility

Assignee

• Regents of the University of Minnesota · US

Inventors

• Jinjin Zhang · 红钢城街道, CN
• Michael G. Garwood · Medina, US
• Djaudat S. Idiyatullin · Minneapolis, US
• Curt Corum · Shoreview, US
• Naoharu Kobayashi · Minneapolis, US

Key dates

• Filing date: Feb 9, 2015
• Grant date: Jun 30, 2020
• Expiry date: Aug 2, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/4816
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Described here are systems and methods for magnetic resonance imaging (“MRI”) using a sweeping frequency excitation applied during a time-varying magnetic field gradient. As an example, a gradient-modulated offset independent adiabaticity (“GOIA”) approach can be used to modify the pattern of the sweeping frequency excitation. Data are acquired as time domain signals and processed to generate images. As an example, the time domain signals are processed using a correlation between a Fourier transform of the gradient-modulated sweeping frequency excitation and a Fourier transform of the time domain signals.