Motion Artifact Compensation in CT
نویسنده
چکیده
A new method for compensating motion artifacts in computerized tomography is presented. The algorithm operates on the raw data, that is, on the measured Radon transform. An edge detection is performed on the Radon transform image. Two curves are obtained from these edges, which are tted by a polynomial. The pointwise diierences between the edges of the Radon transform image and the tted curves are used to determine the parameters for the motion compensation. The corresponding operations are performed on the rows of the Radon transform. Our method is independent of the image reconstruction algorithms like ltered backprojection, Fourier method, etc. since all transformations are performed on the raw data.
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تاریخ انتشار 2007