Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1994-07-19
1996-01-30
O'Shea, Sandra L.
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
324307, G01V 314
Patent
active
054882974
ABSTRACT:
A method for contrast magnetic resonance imaging (MRI) based on three axial anisotropic diffusion weighted images (DWIs) of the identical imaging plane. Three primary colors, red, green, and blue, are first assigned to the gray scale of the three axial, x-, y-, z-axis, anisotropic DWIs. These three primary color images are then vectorially combined to form a single image in full visible color spectrum. Since the sum of the three primary colors of the same intensity results in cancellation (white out), the process effectively eliminates the background signals from isotropic water motion. Accordingly, each pixel of the final color image exhibits a color of a unique frequency, according to the balance of red, green, and blue, reflecting direction of anisotropic water motion in space. Water motion in neuronal fibers, especially those in axons, possesses high intravoxel anisotropy compared to other elements of the nervous system. Therefore, the method is especially sensitive for discerning axonal direction and density.
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Haynes Mack
O'Banion John P.
O'Shea Sandra L.
The Regents of the University of California
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