Motion artifact compensation in CT

Detlef Zerfowski

doi:10.1117/12.310920

24 June 1998 Motion artifact compensation in CT

Detlef Zerfowski

Proceedings Volume 3338, Medical Imaging 1998: Image Processing; (1998) https://doi.org/10.1117/12.310920
Event: Medical Imaging '98, 1998, San Diego, CA, United States

Abstract

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 fitted by a polynomial. The pointwise differences between the edges of the Radon transform image and the fitted 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 filtered backprojection, Fourier method, etc. since all transformations are performed on the raw data.

Citation Download Citation

Detlef Zerfowski "Motion artifact compensation in CT", Proc. SPIE 3338, Medical Imaging 1998: Image Processing, (24 June 1998); https://doi.org/10.1117/12.310920

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