Abstract: An interactive virtual angioscope system for coronary arteries based on X-ray
coronary angiograms and intravascular ultrasound images is constructed. First, the vessel
including lumen and possible plaques is three-dimensionally reconstructed through fusion of both
types of image data. Then, visualization of the 3D vessel model is implemented in the manner of
endoscopic fly-through with virtual reality modeling language. Such a virtual coronary angioscope
system can be used in the diagnosis of coronary artery diseases, in the study on the development
of atherosclerosis, in the evaluation of interventional treatment and in the training of medical
personnel.

Key words: coronary artery, virtual angioscope, X-ray coronary angiography, intravascular
ultrasound, image fusion, virtual reality modeling language