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, 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 . Submission:
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