Cyber Technology, Inc.

Image Acquisition, Reconstruction, and Presentation


All renditions (C) Wolfram R. Jarisch, 1993

Projection Images of Numerical Phantoms and Removal of Overlying Vessels

For examples of more complex vessel identification / tracing see human vessel identification

in the presence of a variety of image artifacts.


This work was supported in part by NIH grant 1R 43 HL 50187-01, June-November  1993



"X-Ray" Projection of Numerical Myocardial Phantom including "Coronary" Vessels. Color scale indicates relative density values (see scale in center of images).
Myocardium+Coronaries, Projected
Pre-Processed "X-Ray" Projection of Numerical Myocardial Phantom after removal of "Coronary" vessels.


Myocardium, Vessels Removed
Control:

2-D Numerical "X-Ray" Projection of Phantom with "Coronary Arteries" (left) and Identification and Vessel Removal (density re-scaled, right).

Six such projections are used to achieve a 3-D reconstruction.

MyoModelVesselRemoval
Region-At-Rsik:

2-D Numerical "X-Ray" Projection of Phantom with "Coronaries" (left) and Identification and Vessel Removal (right).

Observe 50% density reduction in one of the "coronary arteries (stenosis)" overlying a round region of reduced density (region-at-risk).

Six such projections are used to achieve a 3-D reconstruction.
MyoRegionAtRiskVesselRemoval




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