Dictionary-free MR parameter inference for fingerprinting reconstruction

US9633455B1 · kind B1 · utility

Assignee

• Siemens Healthcare Limited · DE

Inventors

• Boris Mailhe · Plainsboro, US
• Mariappan S. Nadar · Plainsboro, US
• Xiao Chen · Somerville, US
• Qiu Wang · Princeton, US

Key dates

• Filing date: Dec 10, 2015
• Grant date: Apr 25, 2017
• Expiry date: Dec 10, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2211/412
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method of generating Magnetic Resonance (MR) parameter maps includes creating one or more parameter maps, each respective parameter map comprising initial parameter values associated with one of a plurality of MR parameters. A dynamical update process is performed over a plurality of time points. The dynamical update process performed at each respective time point includes applying a randomized pulse sequence to subject using an MR scanner to acquire a k-space dataset. This randomized pulse sequence is configured to excite a distinct range of values associated with the plurality of MR parameters. The dynamical update process further includes applying a reconstruction process to the k-space dataset to generate an image and using a tracking process to update the one or more parameter maps based on the randomized pulse sequence and the image.