Magnetic resonance imaging using dataset undersampling

US10823806B2 · kind B2 · utility

Assignee

• Siemens Healthcare Limited · DE

Inventors

• Daniel Polak · Cambridge, US
• Yen Mei Lisa Chuah · Nuremberg, DE
• Esther Raithel · Dormitz, DE

Key dates

• Filing date: Nov 22, 2017
• Grant date: Nov 3, 2020
• Expiry date: May 13, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/56545
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Magnetic resonance (MR) data are acquired by applying magnetic fields to an examination region concurrent with stimulated echo signals, such that trajectories, which are not straight lines, are generated in k-space. For this purpose, sequence of RF pulses is applied to generate the stimulated echo signals in the examination object, undersampled MR measurement data are detected during reception of the stimulated echo signals in the at least two receiving coils, along the curved k-space trajectories, and fully sampled MR measurement are generated from the undersampled MR measurement data using sensitivity information of the at least two receiving coils. Alternatively, the MR measurement data are fully sampled in a central region of k-space, and a region outside the central region is not fully sampled, and a phase correction with a Partial Fourier technique is executed on the MR measurement data using fully sampled MR measurement data from the central region of k-space.