System for motion corrected MR diffusion imaging
First Claim
1. A system for determining motion correction data for use in diffusion MR imaging of an anatomical volume, comprising:
- an RF (Radio Frequency) signal generator configured to generate RF excitation pulses in an anatomical region of interest to facilitate subsequent acquisition of associated RF echo data; and
a magnetic field gradient generator configured to generate anatomical slice specific magnetic field gradients for phase encoding and readout RF data acquisition,wherein said RF signal generator and said gradient generator are configured to sequentially acquire a first slice set and a second slice sets in a single first direction through said volume,wherein each of the first slice set and the second slice set comprises a plurality of individual diffusion image slices,wherein the slices of the first slice set are spatially interleaved with the slices of the second slice set within said volume, andwherein said RF signal generator and said gradient generator are further configured to acquire said second slice set by providing, a low flip angle RF pulse successively followed by;
a non-diffusion image data readout magnetic field gradient for to facilitate acquisition of data representing a two-dimensional (2D) non-diffusion image used for motion detection of the first slice set,a first diffusion imaging RF pulse, anda first diffusion imaging phase encoding magnetic field gradient for magnetic preparation to facilitate acquisition of data representing a diffusion image slice of the second slice set.
5 Assignments
0 Petitions
Accused Products
Abstract
A system determines motion correction data for use in diffusion MR imaging using an RF signal generator and magnetic field gradient generator which sequentially acquire in a single first direction through a volume, first and second slice sets individually comprising multiple individual diffusion image slices. The first set of slices and the second set of slices are spatially interleaved within the volume, by providing in acquiring the second slice set, a low flip angle RF pulse successively followed by a non-diffusion image data readout magnetic field gradient for acquisition of data representing a two dimensional (2D) non-diffusion image used for motion detection of the first slice set successively followed by, a first diffusion imaging RF pulse followed by a first diffusion imaging phase encoding magnetic field gradient for preparation for acquiring data representing a diffusion image slice of the second slice set.
-
Citations
13 Claims
-
1. A system for determining motion correction data for use in diffusion MR imaging of an anatomical volume, comprising:
-
an RF (Radio Frequency) signal generator configured to generate RF excitation pulses in an anatomical region of interest to facilitate subsequent acquisition of associated RF echo data; and a magnetic field gradient generator configured to generate anatomical slice specific magnetic field gradients for phase encoding and readout RF data acquisition, wherein said RF signal generator and said gradient generator are configured to sequentially acquire a first slice set and a second slice sets in a single first direction through said volume, wherein each of the first slice set and the second slice set comprises a plurality of individual diffusion image slices, wherein the slices of the first slice set are spatially interleaved with the slices of the second slice set within said volume, and wherein said RF signal generator and said gradient generator are further configured to acquire said second slice set by providing, a low flip angle RF pulse successively followed by; a non-diffusion image data readout magnetic field gradient for to facilitate acquisition of data representing a two-dimensional (2D) non-diffusion image used for motion detection of the first slice set, a first diffusion imaging RF pulse, and a first diffusion imaging phase encoding magnetic field gradient for magnetic preparation to facilitate acquisition of data representing a diffusion image slice of the second slice set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method for determining motion correction data for use in diffusion MR imaging of an anatomical volume, comprising the steps of:
-
generating RF excitation pulses in an anatomical volume of interest; generating anatomical slice;
specific magnetic field gradients for phase encoding and readout RF data acquisition in said volume; andin response to the RF excitation pulse and slice;
specific magnetic field gradient generation, sequentially acquiring a first slice set and a second slice sets in a single first direction through said volume, by providing in acquiring said second slice set a low flip angle RF pulse successively followed by;a non-diffusion image data readout magnetic field gradient adapted to facilitate acquisition of data representing a two dimensional (2D) non-diffusion image used for motion detection of the first slice set, a first diffusion imaging RF pulse, and a first diffusion imaging phase encoding magnetic field gradient adapted to provide magnetic preparation to facilitate acquisition of data representing a diffusion image slice of the second slice set, wherein each of said first and second slice sets comprises a plurality of individual diffusion image slices, and wherein the first set of slices and the second set of slices are spatially interleaved within said volume.
-
Specification