Accurate distortion correction scheme for digital subtraction angiography

Haiying Liu; Hsiang-Hsin Hsiung

doi:10.1117/12.323229

1 October 1998 Accurate distortion correction scheme for digital subtraction angiography

Haiying Liu, Hsiang-Hsin Hsiung

Proceedings Volume 3460, Applications of Digital Image Processing XXI; (1998) https://doi.org/10.1117/12.323229
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

Robust geometric distortion characterization and correction methods have been developed and validated for DSA application. A compact as well as efficient numerical parameterization technique has been used for characterizing the 3D geometric image distortion of a clinical DNA system. To some extent, the 3rd order polynomial was found to be sufficient for the parameterization of global image distortion for all rotational angles. One of the advantages of the new technique is compact in the sense that it does not require a large distortion parameter look-up table. The new method promises a potential of using less regular distributed calibration points for a complete 3D image distortion characterization of DSA systems. Furthermore, two different schemes based on the pixel mapping for correcting image distortion have been successfully demonstrated yielding satisfactory results.

Citation Download Citation

Haiying Liu and Hsiang-Hsin Hsiung "Accurate distortion correction scheme for digital subtraction angiography", Proc. SPIE 3460, Applications of Digital Image Processing XXI, (1 October 1998); https://doi.org/10.1117/12.323229

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KEYWORDS

Distortion

3D image processing

Angiography

Convolution

3D image reconstruction

Calibration

Digital imaging

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