Patent ID: 8938108
Filing Date: 2015-01-20
Classification: G06T

Abstract:
1. A method, comprising: reducing structured artifacts in 3D volumetric image data, which is generated with reconstructed projection data produced by an imaging system, by processing the 3D volumetric image data along a z-axis direction, wherein the 3D volumetric image data includes structured artifacts which have high-frequency components in the z-axis direction, and lower-frequency components within the x-y plane, the processing, comprising: de-noising a copy of a set of coronal slices in a working volume of the 3D volumetric image data; generating a set of difference coronal slices by subtracting the set of de-noised coronal slices from the copy of the set of coronal slices; substituting the difference coronal slices for the set of coronal slices in the working volume; de-noising a copy of a set of sagittal slices in working volume; generating a set of difference sagittal slices by subtracting the set of de-noised sagittal slices from the copy of the set of sagittal slices; substituting the difference sagittal slices for the set of coronal slices in the working volume; de-noising a copy of a set of axial slices in the working volume after substituting the coronal and sagittal difference slices in the working volume; and subtracting the set of de-noised axial slices from the 3D volumetric image data.