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US 10,702,212 B2Granted
Magnetic resonance examination system with motion detection
AssigneeKoninklijke Philips N.V.
InventorMarinus Johannes Adrianus Maria Van Helvoort
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Abstract
A magnetic resonance examination system includes an RF arrangement with an RF antenna to acquire magnetic resonance signals from an object to be examined. A motion sensing arrangement detects motion information of the object. The motion sensing arrangement is provided with one or more RF antenna motion sensors mounted on the RF antenna and one or more object motion sensors to be attached to the object. In an example the motion sensors are integrated devices having motion sensitivity along three independent axes.
Claims16
A magnetic resonance examination system comprising:
- a flexible RF antenna configured to receive magnetic resonance signals from a patient to be examined, the flexible RF antenna being configured to be movably mounted to the patient such that the flexible RF antenna and the object are movable relative to each other;
- a first plurality of motion sensors mounted to the flexible RF antenna, and configured to detect motion and deformation of the flexible RF antenna;
- a second plurality of motion sensors configured to be directly mounted to the patient to detect motion of the object, the second plurality of motion sensors being separate from the first plurality of motion sensors;
- and
- a data processor connected with the first plurality of motion sensors and the second plurality of motion sensors and configured to:
- determine relative motion between the patient and the flexible RF antenna from the signals indicative of flexible RF antenna motion and deformations from the first plurality of motion sensors mounted to the flexible RF antenna and signals indicative of the motion of the patient from the second pluralities of motion sensors mounted to the patient;
- and
- reconstruct a motion and RF antenna deformation corrected magnetic resonance image from the received magnetic resonance signals corrected for the relative motion between the flexible RF antenna and the patient.
5 more elements
A magnetic resonance examination system comprising:
- a deformable local, surface RF coil configured to be mounted to an object to be examined such that the coil and the object are movable relative to each other, the local, surface RF coil being configured to at least receive magnetic resonance signals from the object, the local, surface RF coil including a rigid portion and a deformable portion;
- a first plurality of motion sensors mounted to the local, surface RF coil and configured to detect motion of the local, surface RF coil, the first plurality of motion sensors including sensors mounted to each of the rigid portion and the deformable portion of the local, surface RF coil;
- a second plurality of motion sensors configured to be mounted to the object to detect motion of the object;
- a data processor connected with the local, surface RF coil, the first plurality of motion sensors, and the second plurality of motion sensors, the data processor being configured to determine relative motion between the patient and the local surface RF coils and deformation of the deformable local, surface RF coil from the signals from the first and second pluralities of motion sensors and to reconstruct the received magnetic resonance signals into a magnetic resonance image that is both motion and deformation corrected.
1 more element
A magnetic resonance examination system, comprising:
- an RF antenna configured to receive magnetic resonance signals from an object to be examined;
- a first plurality of motion sensors mounted to the RF antenna, and configured to detect motion of the RF antenna;
- a second plurality of motion sensors attached to the object to detect motion of the object, the second plurality of motion sensors being separate from the first plurality of motion sensors;
- and
- a data processor connected with the first plurality of motion sensors and the second plurality of motion sensors and configured to:
- determine motion of the RF antenna using the first plurality of motion sensors mounted to the RF antenna;
- determine motion of the object using the second plurality of motion sensors attached to the object;
- determine relative motion between the object and the RF antenna using the first plurality of motion sensors mounted to the RF antenna and the second plurality of motion sensors attached to the object;
- and
- reconstruct a motion corrected magnetic resonance image from the received magnetic resonance signals corrected for the relative motion between the RF antenna and the object.
7 more elements
Dependencies are inferred from the claim text.