METHOD AND MAGNETIC RESONANCE APPARATUS TO ACQUIRE A MAGNETIC RESONANCE DATA SET BY RADIAL SCANNING

摘要

Method to acquire a magnetic resonance data set of an acquisition area (5) in a subject (O) via radial scanning along a fixed number of spokes (6) respectively described by a first angle in k-space, wherein the acquisition area (5) deviates in positional space from a circular shape in a shape that can be described by the set of first angles; wherein the acquisition of the spokes (6) takes place according to an acquisition order; wherein an acquisition position of the acquisition order is associated with each first angle under consideration of a comparison data set of the fixed number of second angles (in which second angles of successive acquisition positions differ by a golden angle) such that, for a first angle of each acquisition position, the spatially adjacent first angles have the same acquisition positions as the second angles spatially adjacent to a second angle of the acquisition position.

主权项

1. A method to acquire a magnetic resonance data set of an acquisition area of a subject, comprising:
operating a magnetic resonance data acquisition unit to acquire raw magnetic resonance data from a subject situated in the magnetic resonance data acquisition unit; via a processor supplied with said raw magnetic resonance data, entering said raw magnetic resonance data into an electronic memory organized as k-space comprising a plurality of data entry points, by radially entering said raw magnetic resonance data along respective data points in a fixed number of spokes in k-space, with each of said spokes being described by a first angle in k-space, and wherein said acquisition area in said subject deviates from a circular shape and has a shape that is described collectively by said respective first angles; entering said raw magnetic resonance data into respective spokes according to an acquisition order of respective positions of said spokes, said acquisition order defining said respective positions by comparison of said first angle with a data set of a fixed number of second angles for successive acquisition positions that differ by a golden angle, so as to cause, for each first angle of each acquisition position, respective spatially adjacent first angles thereto to have the same acquisition positions as the respective second angles that are spatially adjacent to the second angle of the respective acquisition position; and making the raw magnetic resonance data entered into k-space available from said electronic memory in an electronic form for reconstructing a magnetic resonance image of said acquisition area therefrom.