Methods for acquiring a magnetic resonance image dataset and for generating a motion-corrected image dataset
OwnerDaniel Polak, Daniel Nicolas Splitthoff +1inventors
InventorsDaniel Polak, Daniel Nicolas Splitthoff, Stephen Farman Cauley
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Abstract
A method for acquiring a magnetic resonance image dataset of an object includes using an imaging protocol in which a number of k-space lines are acquired in one shot. The imaging protocol includes a plurality of shots. A plurality of additional k-space lines are acquired in at least a subset of the shots, such that movement of the object is detected throughout the imaging protocol. A method for generating a motion-corrected magnetic resonance image dataset from the dataset thus acquired, a magnetic resonance imaging apparatus, and a computer program are also provided.
Claims20
A method for acquiring a magnetic resonance image dataset of an object, the method comprising:
- using an imaging protocol in which spatial encoding is performed using phase encoding gradients along at least one spatial dimension, and frequency encoding gradients along another spatial dimension,
- wherein k-space is sampled during an acquisition in a plurality of k-space lines oriented along a frequency encoding direction,
- wherein a number of k-space lines of the plurality of k-space lines are acquired in one shot, the imaging protocol comprising a plurality of shots, and
- wherein a plurality of additional k-space lines are acquired in at least a subset of shots of the plurality of shots, such that movement of the object is detected throughout the imaging protocol.
A magnetic resonance imaging apparatus comprising:
- a radio frequency controller configured to drive a radio frequency (RF) coil comprising a multi-channel coil array;
- a gradient controller configured to control gradient coils;
- a controller configured to control the radio frequency controller and the gradient controller to execute an imaging protocol, the execution of the imaging protocol comprising:
- use of the imaging protocol, in which spatial encoding is performed using phase encoding gradients along at least one spatial dimension, and frequency encoding gradients along another spatial dimension,
- wherein k-space is sampled during an acquisition in a plurality of k-space lines oriented along a frequency encoding direction,
- wherein a number of k-space lines of the plurality of k-space lines are acquired in one shot, the imaging protocol comprising a plurality of shots, and
- wherein a plurality of additional k-space lines are acquired in at least a subset of shots of the plurality of shots, such that movement of the object is detected throughout the imaging protocol.
In a non-transitory computer-readable storage medium that stores instructions executable by one or more processor to acquire a magnetic resonance image dataset of an object, the instructions comprising:
- using an imaging protocol in which spatial encoding is performed using phase encoding gradients along at least one spatial dimension, and frequency encoding gradients along another spatial dimension,
- wherein k-space is sampled during an acquisition in a plurality of k-space lines oriented along a frequency encoding direction,
- wherein a number of k-space lines of the plurality of k-space lines are acquired in one shot, the imaging protocol comprising a plurality of shots, and
- wherein a plurality of additional k-space lines are acquired in at least a subset of shots of the plurality of shots, such that movement of the object is detected throughout the imaging protocol.
Dependencies are inferred from the claim text.