Diffusion MRI using spherical shell sampling
First Claim
Patent Images
1. A method of imaging comprising:
- receiving magnetic field gradient directions specified for an MRI scan of a microscopic structure;
generating images for each magnetic field gradient direction;
collecting pixel information from the generated images for a given pixel of interest;
assembling the pixel data onto a surface of at least one sphere; and
determining properties of a diffusion function on the at least one sphere by transforming the pixel data assembled onto the surface of the at least one sphere using a spherical transform.
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Abstract
A diffusion MRI technique that employs a sampling/reconstruction scheme that samples the diffusion signal directly on the sphere and reconstructs the diffusion function directly on the sphere is presented.
48 Citations
23 Claims
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1. A method of imaging comprising:
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receiving magnetic field gradient directions specified for an MRI scan of a microscopic structure; generating images for each magnetic field gradient direction; collecting pixel information from the generated images for a given pixel of interest; assembling the pixel data onto a surface of at least one sphere; and determining properties of a diffusion function on the at least one sphere by transforming the pixel data assembled onto the surface of the at least one sphere using a spherical transform. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An article comprising:
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a storage medium having stored thereon instructions that when executed by a machine result in the following; obtaining images of a microscopic structure for different magnetic field gradient directions; collecting pixel information from the images for a given pixel of interest; assembling the pixel data onto a surface of at least one sphere; and determining properties of a diffusion function on the at least one sphere by transforming the pixel data assembled onto the surface of the at least one sphere using a spherical transform. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A system comprising:
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an interface adapted to receive magnetic field gradient directions specified by a user for an MRI of a microscopic structure; a controller, coupled to the user interface and an MRI scanner, operative to control the MRI scanner to generate images of the microscopic structure for each magnetic field gradient direction; and a processor, coupled to the controller, configured to collect pixel information from the generated images for a given pixel of interest, assemble the pixel data onto a surface of at least one sphere and determine properties of a diffusion function on the at least one sphere by transforming the pixel data assembled onto the surface of the at least one sphere using a spherical transform. - View Dependent Claims (21, 22, 23)
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Specification