Systems and methods for fast magnetic resonance image reconstruction using a heirarchically semiseparable solver

US10126397B2 · kind B2 · utility

Assignee

• The General Hospital Corporation · US

Inventors

• Stephen Farman Cauley · Cambridge, US
• Berkin Bilgic · Cambridge, US
• Kawin Setsompop · Boston, US
• Lawrence L. Wald · Cambridge, US

Key dates

• Filing date: May 8, 2015
• Grant date: Nov 13, 2018
• Expiry date: Dec 17, 2036

Classification

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

Abstract

Systems and methods for reconstructing images using a hierarchically semiseparable (“HSS”) solver to compactly represent the inverse encoding matrix used in the reconstruction are provided. The reconstruction method includes solving for the actual inverse of the encoding matrix using a direct (i.e., non-iterative) HSS solver. This approach is contrary to conventional reconstruction methods that repetitively evaluate forward models (e.g., compressed sensing or parallel imaging forward models).