Multi-shot echo planar imaging using reordered segments and RF excitation pulse phase and slice profiles matched across interleaves

US10228434B2 · kind B2 · utility

Assignee

• The General Hospital Corporation · US

Inventors

• Jonathan R. Polimeni · Cambridge, US
• Thomas Witzel · Boston, US

Key dates

• Filing date: May 3, 2017
• Grant date: Mar 12, 2019
• Expiry date: Aug 31, 2037

Classification

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

Abstract

Described here are systems and methods for producing images with a magnetic resonance imaging (“MRI”) system using a high-resolution, motion-robust, artifact-free segmented echo planar imaging (“EPI”) technique. In particular, a fast low angle excitation echo planar imaging technique (“FLEET”) using variable flip angle (“VFA”) radio frequency (“RF”) excitation pulses that are specifically designed to have a flat magnitude and phase profile across a slice for a range of different flip angles.