Artifact reduction in SSFP MRI using weighted sum of combined signals

US6906516B2 · kind B2 · utility

Assignee

• The Board of Trustees of the Leland Stanford Junior University · US

Inventors

• Neal Bangerter · Stanford, US
• Dwight G. Nishimura · Palo Alto, US

Key dates

• Filing date: Aug 5, 2003
• Grant date: Jun 14, 2005
• Expiry date: Aug 5, 2023

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/56563
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Artifact reduction in steady state free precession magnetic resonance imaging uses weighting of acquired image data to emphasize higher signals and then establishing an image signal based on the combined weighted signals. In one embodiment, a SSFP imaging sequence uses phase cycling and acquired image data is squared with the squared data then combined. The final image signal is based on the square root of the squared data.