Patent ID: 11927660
Assignee: FORSCHUNGSZENTRUM JüLICH GMBH
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 12:
13. A magnetic resonance tomograph comprising:
a device for generating a static magnetic field,
one or more gradient coils and a gradient coil controller coupled to the gradient coils, said one or more gradient coils and gradient coil controller configured to generate a temporally variable magnetic field gradient,
one or more high-frequency coils and a high-frequency controller coupled to the high-frequency coils, the one or more high-frequency coils and high-frequency control element configured for generating excitation pulses,
a receiving coil,
a signal processing system configured to receive measuring data from the receiving coil, and
a control system coupled to the device for generating the static magnetic field, the gradient coil controller, the high-frequency controller and the signal processing system,
wherein the magnetic resonance tomograph is configured to record first navigator data of the object using a first spherical Lissajous navigator in k-space with kr<0.2/cm, wherein kr refers to an absolute value of a wave vector k, and to determine a first set of functions based on first navigator data of the object and first coefficients of the first set of functions, wherein the magnetic resonance tomograph is further configured to record second navigator data of the object using a second spherical Lissajous navigator in the k-space with kr<0.2/cm, and to determine second set of functions based on second navigator data of the object and second coefficients of the second set of functions, and wherein the magnetic resonance tomograph is further configured to calculate a rotation of the object based on the first coefficients and the second coefficients, wherein calculating the rotation comprises determining a relationship between each first coefficient in the first coefficients and each second coefficient in the second coefficients, said relationship governed by a rotation matrix selected from one of: an Euler rotation matrix and a Wigner rotation matrix, and
wherein the magnetic resonance tomograph is configured to adjust a recording area for determining image data of the object based on the rotation of the object.