A new method for dynamic road mapping of coronary angiography cardiac catheterization cine loops

In this paper a new method for road mapping for cardiac catheterization cine loops were introduced. The method depends on detecting the edges of the coronary vessels after the dye injection during the catheterization operation and drawing a road map for the vessels so that the angiographer can navigate through these drawn paths with his catheter under fluoroscopy X-ray exposure. Canny technique was used to detect the edges of these gray scale high-resolution images. It was used to detect the vessel edges due to its high level of detection for this kind of images. The method estimate and track the heart motion during the operation and draw the road map in a real dynamic way. The road map is super imposed over the same fluoroscopy monitor so that the angiographer can navigate with the catheter through the detected coronary artery without any need for another monitor for road map. This method will offer dose limitation for the patient, easy manipulation in PTCA operations for inserting stents and balloons in coronary vessels.