Patent ID: 7415147

Claim:
A method of destreaking photoelectric images reconstructed from a set of three-dimensional photoelectric projection data points obtained from a two-dimensional detector array at multiple view angles in multi-energy X-ray computed tomography, wherein a neighboring scheme is provided, for each photoelectric projection data point, the method comprising: A. Computing the mean and the standard deviation of the neighbors defined by the neighboring scheme; B. Calculating an upper limit and a lower limit from the computed mean and standard deviation as a function of a pre-determined constant, including: B1. Calculating a product of the standard deviation and the pre-determined constant; B2. Calculating an upper limit as a function of adding the product calculated in Step B1 to the mean; and B3. Calculating the lower limit as a function of subtracting the product calculated in Step B1 from the mean; C. Detecting if said photoelectric projection data point is an outlier using the calculated upper and lower limits; and D. Replacing the detected outliers with a replacement data point calculated as a function of said mean and standard deviation of said neighboring data points corresponding to the detected outlier.