MRT apparatus, method and computer program product for determining the speed of a flowing medium
AssigneeSiemens Aktiengesellschaft
InventorStefan Assmann
Life of this patent
Estimating the term…
Abstract
In a method for automatic determination of the actual speed interval of a flowing medium in flow measurements in magnetic resonance imaging, an overview image (localizer) is acquired displayed on a screen, a scout flow measurement is performed by acquiring an image series during a motion cycle at a pre-determined speed interval in a tissue-area to be measured, the peak speed of the medium in the tissue area to be measured is determined on the basis of the scout flow measurement, an optimized flow measurement is performed by acquiring the same images from the acquired image series on the basis of the determined peak speed, and the speed-resolved tissue area obtained by means of the optimized flow measurement is displayed on the screen.
Claims12
A method for automatically determining a speed of a flowing medium in a magnetic resonance tomography flow measurement, comprising the steps of:
- acquiring an overview magnetic resonance of a selected area of a living subject;
- displaying said overview image on a screen;
- performing a scout flow measurement by acquiring a magnetic resonance image series of said subject during a motion cycle of said subject at a predetermined speed interval in a tissue area within said overview image, said tissue area containing a flowing medium;
- determining from said scout flow measurement, determining a peak speed of said flowing medium in said tissue area;
- performing an optimized flow measurement by acquiring respective images, corresponding to selected images in said image series, dependent on said peak speed;
- and
- displaying on said screen a speed-resolved image including said tissue area, obtained by said optimized flow measurement.
A magnetic resonance imaging device comprising:
- a magnetic resonance scanner adapted to receive a subject therein;
- a control computer connected to said magnetic resonance scanner;
- a display screen connected to said control computer;
- and
- said control computer operating said magnetic resonance scanner for acquiring an overview magnetic resonance of a selected area of a living subject, displaying said overview image on a screen, performing a scout flow measurement by acquiring a magnetic resonance image series of said subject during a motion cycle of said subject at a predetermined speed interval in a tissue area within said overview image, said tissue area containing a flowing medium, determining from said scout flow measurement, determining a peak speed of said flowing medium in said tissue area, performing an optimized flow measurement by acquiring respective images, corresponding to selected images in said image series, dependent on said peak speed, and displaying on said screen a speed-resolved image including said tissue area, obtained by said optimized flow measurement.
A computer software product loadable into a control computer of a magnetic resonance imaging apparatus, said magnetic resonance imaging apparatus including a magnetic resonance scanner operated by said control computer, and a display screen connected to said control computer, said computer program product running in said control computer and causing said control computer to
- acquire an overview magnetic resonance of a selected area of a living subject;
- display said overview image on a screen;
- perform a scout flow measurement by acquiring a magnetic resonance image series of said subject during a motion cycle of said subject at a predetermined speed interval in a tissue area within said overview image, said tissue area containing a flowing medium;
- determine from said scout flow measurement, determining a peak speed of said flowing medium in said tissue area;
- perform an optimized flow measurement by acquiring respective images, corresponding to selected images in said image series, dependent on said peak speed;
- and
- display on said screen a speed-resolved image including said tissue area, obtained by said optimized flow measurement.
Dependencies are inferred from the claim text.