Method for calibrating a magnetic resonance imaging (MRI) phantom

A computer program product for use for determining a geometric accuracy of an magnetic resonance imaging phantom, the computer program product comprising program code:

• for causing a magnetic resonance imaging system to acquire an MRI image of an MRI detectable part of the phantom by means of a first sequence, wherein the MRI image comprises multiple slices and;
• for causing a computer to determine the geometric inaccuracy of the MRI detectable part of the MRI phantom based on the position and the representation of the part in the MRI image under the assumption that the phantom was placed within a symmetry plane of a gradient system of the magnetic resonance imaging system.

A method for calibrating a magnetic resonance imaging (MRI) phantom comprising at least one MRI detectable part with a position within the phantom, that deviates from an expected (i.e. target) position by an unknown geometric inaccuracy caused by manufacturing imprecision, wherein the method comprises:

• placing the phantom at a predetermined location in a magnetic resonance system such that the MRI detectable part is at least partially within a symmetry plane, i.e. along one of the x=0, y=0 or z=0 planes of a gradient system of the magnetic resonance imaging system and;
• acquiring an MRI image of the MRI detectable part of the phantom by means of a first sequence, wherein the MRI image comprises multiple slices;
• determining the geometric inaccuracy based on a deviation of the actual position of the MRI detectable part from the expected geometry of the MRI detectable part of the MRI phantom based on the position and the representation of the part in the MRI image.