Centre National De La Recherche Scientifique

Université´ D'aix-Marseille

Other

Olivier Girard

Robert Cuchet

Line Vieux-Rochaz

Samira Mchinda

Stanislas Rapacchi

Valentin Hugo Jonas Prevost

Mark Bydder

Guillaume Didier David Duhamel

In a method and magnetic resonance (MR) apparatus for MR image reconstruction, an image reconstruction algorithm is used that operates on one calibration matrix that is formed by reorganizing a number of individual, undersampled k-space data sets respectively acquired by multiple reception coils in a parallel MR data acquisition from a subject exhibiting motion. The motion causes the k-space data sets to exhibit errors. In order to use the calibration matrix in the reconstruction algorithm, it is subjected to an iterative rank reduction procedure in which, in each iteration, a residual is calculated for each data point that represents how poorly, due to motion-induced corruptions, that data point satisfies the low rank constraint, and non-satisfying data points are removed from the data point for the next iteration. The resulting low rank matrix at the end of the iterations is then used to produce images with fewer motion-induced errors.

Method and magnetic resonance apparatus for image reconstruction with trimmed autocalibrating k-space estimation based on structured matrix completion

A method for producing an MRI image includes the steps of acquiring lines of a volume under analysis using a steady-state gradient echo sequence in successive repetition times (TR); and applying an inhomogeneous magnetization transfer (ihMT) pre-saturation module (T) in each repetition time. The duration of the repetition times is greater than 20 milliseconds.

Method for enhancing the ihMT sensitivity of steady-state gradient echo acquisitions in an MRI system

Electrical connection between two faces of a substrate and manufacturing process

Growing community of inventors

Marseilles, France

Olivier Girard