Prior enhanced compressed sensing (PRINCE-CS) reconstruction for dynamic 2D-radial cardiac MRI

US8675942B2 · kind B2 · utility

Assignees

• Siemens Aktiengesellschaft · DE
• National Institutes of Health, Office of Technology Transfer · US

Inventors

• Ti-chiun Chang · Plainsboro, US
• Mariappan S. Nadar · Plainsboro, US
• Jens Gühring · Monmouth Junction, US
• Michael Zenge · Nuremberg, DE
• Kai Tobias Block · Nuremberg, DE
• Peter Speier · Erlangen, DE
• Edgar Müller · Fribourg, CH
• Michael Sass Hansen · Tønder, DK

Key dates

• Filing date: Oct 25, 2011
• Grant date: Mar 18, 2014
• Expiry date: Jan 14, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/5608
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A reconstructed image is rendered from a set of MRI data by first estimating an image with an area which does not contain artifacts or has an artifact with a relative small magnitude. Corresponding data elements in the estimated image and a trial image are processed, for instance by multiplication, to generate an intermediate data set. The intermediate data set is transformed and minimized iteratively to generate a reconstructed image that is free or substantially free of artifacts. In one embodiment a Karhunen-Loeve Transform (KLT) is used. A sparsifying transformation may be applied to generate the reconstructed image. The sparsifying transformation may be also not be applied.