Search Results - nathan yanasak

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Use of Novel Gradient Directions with Diffusion to MRI to Synthesize Complex Diffusive Geometrics
This invention provides a phantom, or a test object, which includes anisotropic structures, which can be used to monitor DTI measures. The anisotropic structures include a plurality of water-filled capillaries, arranged in a predefined configuration. In addition to using the phantom for providing quality assurance (QA) measurements of DTI in a conv...
Published: 8/13/2019   |   Inventor(s): Nathan Yanasak
Keywords(s):  
Category(s): Medical Devices
Rescaling of Image Intensities with Diffusion MRI to Synthesize Complex Diffusive Geometries
This invention is composed of a phantom and DTI bench marking that allows DTI to proceed, applicable to tissue structures found throughout the body. Bench marking of DTI data will allow for a host of benefits, including 1) appropriate comparison of DTI data within multi-center trials; 2) appropriate ranges of uncertainty that could be presented wit...
Published: 8/13/2019   |   Inventor(s): Nathan Yanasak, Tom Hu
Keywords(s):  
Category(s): Medical Devices
Recombination of K-space Data with Two Different Applied Diffusion Gradients with DTI MRI, To Synthesize Complex Diffusive Geometrics
This invention describes a unique phantom and the mathematics of image recombination for data acquired in an MRI scanner during a diffusion tensor imaging (DTI) sequence, to synthesize more complicated data using simple structures with a known geometry. During a DTI sequence, a series of images are generated by applying gradient magnetic fields alo...
Published: 8/13/2019   |   Inventor(s): Nathan Yanasak
Keywords(s):  
Category(s): Medical Devices
A Parametric Mapping Method for Correction of Noise-based Systematic Bias of DTI Metrics, Using a DTI Mapping Phantom
This invention describes the apparatus and data processing technique for correcting the noise based systematic bias within MRI diffusion tensor image (DTI) sequences. The specific claim requested in this IP document is for coverage of 1) the phantom design, 2) the concept of the parametric remapping technique, and 3) the use of the phantom to deter...
Published: 8/13/2019   |   Inventor(s): Nathan Yanasak, Tom Hu
Keywords(s):  
Category(s): Medical Devices
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