System for reconstructing MRI images acquired in parallel

US9588207B2 · kind B2 · utility

Assignees

• National Institutes of Health (NIH), U.S. Dept. of Health and Human Services (DHHS), The United States of America NIH Division of Extramural Inventions and Technology Resources (DEITR) · US
• Siemens Healthcare Limited · DE

Inventors

• Daniel Stuart Weller · Charlottesville, US
• Leo Grady · Yardley, US
• Lawrence L. Wald · Cambridge, US
• Vivek Goyal · Cambridge, US

Key dates

• Filing date: Sep 14, 2012
• Grant date: Mar 7, 2017
• Expiry date: Dec 12, 2035

Classification

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

Abstract

A system for parallel image processing in MR imaging comprises multiple MR imaging RF coils for individually receiving MR imaging data representing a slice of patient anatomy. An MR imaging system uses the multiple RF coils for acquiring corresponding multiple image data sets of the slice. An image data processor comprises at least one processing device conditioned for, deriving a first set of weights for generating a calibration data set comprising a subset of k-space data of composite image data representing the multiple image data sets. The at least one processing device uses the calibration data set in generating a first MR image data set, deriving a second set of weights using the calibration data set and the generated first MR image data set and uses the second set of weights in generating a second MR image data set representing a single image having a reduced set of data components relative to the first composite MR image data set.