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Iterative methods for dose reduction and image enhancement in tomography

United States Patent

September 18, 2012
View the Complete Patent at the US Patent & Trademark Office
A system and method for creating a three dimensional cross sectional image of an object by the reconstruction of its projections that have been iteratively refined through modification in object space and Fourier space is disclosed. The invention provides systems and methods for use with any tomographic imaging system that reconstructs an object from its projections. In one embodiment, the invention presents a method to eliminate interpolations present in conventional tomography. The method has been experimentally shown to provide higher resolution and improved image quality parameters over existing approaches. A primary benefit of the method is radiation dose reduction since the invention can produce an image of a desired quality with a fewer number projections than seen with conventional methods.
Miao; Jianwei (Los Angeles, CA), Fahimian; Benjamin Pooya (Beverly Hills, CA)
The Regents of the University of California (Oakland, CA)
12/ 363,079
January 30, 2009
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with Government support under Grant Number DE-FG02-06ER46276 awarded by the Department of Energy. The Government has certain rights in this invention.