Method for the fast acquisition of a magnetic resonance image

US6710686B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Thomas Mertelmeier · Erlangen, DE
• Arnulf Oppelt · Spardorf, DE

Key dates

• Filing date: Apr 19, 2002
• Grant date: Mar 23, 2004
• Expiry date: Apr 19, 2022

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/3415
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In a method for the fast acquisition of a magnetic resonance image, magnetic resonance signals from an imaging region are conditioned with magnetic gradient fields that define a spatial frequency space so that the spatial frequency domain is occupied with magnetic resonance signals having trajectories that are radially directed and proceed through a projection center, and the imaging region is divided into sub-regions with an antenna of an antenna array respectively allocated to each sub-region. The antennas have respective positions relative to the projection center such that the antennas simultaneously receive the magnetic resonance signals and form reception signals from the magnetic resonance signals according to their sensitivity. The number of radially directed trajectories is of only such a size so that the sub-zones regardless of their spatial position in the imaging zone from the respective reception signals can be unambiguously reconstructed. The reception signals of the individual antennas, taking the positions of the individual antennas into consideration, are transformed in a transformation step to form a magnetic resonance image of the entire imaging zone.