Multi-coil magnetic resonance data acquisition and image reconstruction method and apparatus using blade-like k-space sampling

US7482806B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Alto Stemmer · Erlangen, DE
• Vladimir Jellus · Erlangen, DE

Key dates

• Filing date: Dec 5, 2006
• Grant date: Jan 27, 2009
• Expiry date: Mar 23, 2027

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/5676
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In a data acquisition and reconstruction method for magnetic resonance (MR) tomography, and a corresponding MR tomography apparatus, a blade-like sampling of k-space according to the PROPELLER method using a number of reception coils ensures with partial under-sampling of at least one blade of k-space such that the under-sampling ensues by regular omission of k-space lines in both boundary regions (with regard to the phase-encoding direction ky) of a blade such that only data in each A-th line of said boundary regions are acquired; with no k-space lines being omitted in the central region (with regard to the ky-direction) and thus at least one coil calibration line is obtained, selection of a suitable PPA method for completion of the blades and determination of the necessary coil calibration data necessary for the PPA reconstruction of a partial under-sampled blade from the central completely sampled region of said blade. PPA reconstruction via application of the selected PPA method selected in order to interpolate the non-measured or, respectively, omitted k-space lines of each blade, and execution of the PROPELLER reconstruction after the PPA reconstruction.