Imaging method with multi-slice acquisition
AssigneeSiemens Aktiengesellschaft
InventorsRadhouene Neji, David Andrew Porter
Life of this patent
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Abstract
In a method and magnetic resonance (MR) apparatus for acquiring MR signals from an examination object an RF excitation pulse is directed into the examination object while activating magnetic field gradients in two different spatial directions, such that a magnetization in the examination object in the two different spatial directions is limited by the RF excitation pulse and the switching of the magnetic field gradients. The magnetization is excited in one of the two spatial directions, of a slice selection direction, in a number of periodic layers, so MR signals are generated in the multiple periodic slices. The MR signals in the multiple periodic layers are read out using multiple reception coils of the MR scanner.
Claims10
A method for acquiring magnetic resonance (MR) signals from an examination object, said method comprising:
- while an examination object is situated in an MR scanner, radiating a radio-frequency (RF) excitation pulse into the examination object while activating magnetic field gradients respectively into different spatial directions, and thereby producing a magnetization of nuclear spins in the examination object in said two different spatial directions, limited by said RF excitation pulse and the activated magnetic field gradients, said magnetization of said nuclear spins being produced in one of said two spatial directions, as a slice selection direction, in a plurality of periodic slices;
- operating the MR scanner to generate MR signals in said plurality of periodic layers;
- operating said MR scanner to read out said MR signals in said plurality of periodic layers using a plurality of reception coils of the MR scanner;
- and
- making the MR signals available in electronic form as a data file for further processing thereof.
A magnetic resonance (MR) apparatus comprising:
- an MR scanner comprising a radio-frequency (RF) radiator, a plurality of RF reception coils, and a gradient coil arrangement;
- an RF controller configured to operate said RF radiator to radiate at least one RF excitation pulse into an examination object situated in said MR scanner;
- a gradient controller configured to operate said gradient coil arrangement to activate magnetic field gradients respectively into different spatial directions, while said examination object is situated in an MR scanner and while radiating said RF excitation pulse and thereby producing a magnetization of nuclear spins in the examination object in said two different spatial directions, limited by said RF excitation pulse and the activated magnetic field gradients, said magnetization of said nuclear spins being produced in one of said two spatial directions, as a slice selection direction, in a plurality of periodic slices, and thereby generating MR signals in said plurality of periodic layers;
- a control computer configured to operate said MR scanner to read out said MR signals in said plurality of periodic layers using said plurality of reception coils of the MR scanner;
- and
- said control computer being configured to make the MR signals available in electronic form as a data file for further processing thereof.
Dependencies are inferred from the claim text.