1 October 1990 Spatial frequency characteristics of vessel geometry and densitometry in coronary arteriograms
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Abstract
The vessel geometry and densitometry in single-view coronary angiograms are analyzed with an emphasis on the local features and how they vary along a vessel segment. With the aid of a tracking algorithm the two-dimensional contour of a vessel segment is represented by one-dimensional functions, in terms of lumen width, direction, and intensity along the vessel centerline. A quantitative validation of this contour representation approach is established by using the computer-generated imagery. The spatial frequency responses of the vessel contour functions are characterized for human coronary cineangiograms and for digital subtraction angiograms. The lumen width functions have 90% of the signal energy concentrating below a spatial cutoff frequency of 2.5 to 3.7 per average lumen width. The application of the contour representation to vessel image compression is demonstrated. The result of this study provides a guideline for spatial filtering of the coronary arteriograms. The methodology should also be useful in analyzing coronary arterial abnormalities and tortuosity.
Ying Sun, "Spatial frequency characteristics of vessel geometry and densitometry in coronary arteriograms," Optical Engineering 29(10), (1 October 1990). https://doi.org/10.1117/12.55710
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