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of coronary arteries and peripheral vessels in the body has become a reality without
introducing catheters. CT scan opened a new window offering unrestricted views of
many vital structures of body. It has helped in unravelling diagnosis in structures in thorax and abdomen besides brain. However heart and vessels, so far, eluded this technology.
Heart is a restless organ and its motion is complex as it squeezes, contracts, moves
clockwise and axially at the same time. Coronary arteries of different calibres run on the surface of heart in different directions. Besides motion of heart, chest moves with
respiration. Ultra fast technology is required to freeze the heart motion at several frames and then reconstruct especially to image small coronary arteries.
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