The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 17, 2013
Filed:
Jun. 06, 2011
Zhi Yang, Vernon Hills, IL (US);
Alexander Zamyatin, Hawthorn Woods, IL (US);
Yu Zou, Naperville, IL (US);
Michael D. Silver, Northbrook, IL (US);
Zhi Yang, Vernon Hills, IL (US);
Alexander Zamyatin, Hawthorn Woods, IL (US);
Yu Zou, Naperville, IL (US);
Michael D. Silver, Northbrook, IL (US);
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Medical Systems Corporation, Tochigi-Ken, JP;
Abstract
Photon starvation causes streaks and noise and seriously impairs the diagnostic value of the CT imaging. To reduce streaks and noise, a new scheme of adaptive Gaussian filtering relies on the diffusion-derived scale-space concept in one embodiment of the current invention. In scale-space view, filtering by Gaussians of different sizes is similar to decompose the data into a sequence of scales. As the scale measure, the variance of the filter linearly relates to the noise standard deviation of a predetermined noise model in the new filtering method. The new filter has only one optional parameter that remains stable once tuned. Although single-pass processing using the new filter generally achieves desired results, iterations are optionally performed.