Method and apparatus to improve an MRI image using regularization

US7154268B2 · kind B2 · utility

Assignee

• The United States of America as Represented by the Secretary of the Department of Health and Human Services · US

Inventors

• Peter Kellman · Bethesda, US
• Elliot McVeigh · Phoenix, US

Key dates

• Filing date: Oct 17, 2002
• Grant date: Dec 26, 2006
• Expiry date: Oct 24, 2022

Classification

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

Abstract

An MRI imaging system includes at least one processor and a plurality of coils to acquire a plurality of k-space samples of a target to image. The system includes a machine-readable media comprising instructions which, when executed by the processor, result in determining a plurality of different regularization matrices for a plurality of different regions of an image of the target. The regularization matrices are applied in the determination of a plurality of unmixing matrices for the regions. The unmixing matrices are applied to produce the image without ghost artifacts, from a plurality of MRI images produced from the plurality of k-space samples and each comprising ghost artifacts.