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Coronary arteries can be visualized most accurately at autopsy. Pre-mortem imaging can be performed by way of a cardiac catheterization. Computed tomography-angiography of the coronary vessels shows some promise, but is not as accurate as plain angiography. Magnetic resonance angiography also can show the cardiac vasculature, but again, is somewhat limited in its usefulness due to the time it takes to obtain the pictures and other technical factors, such as heart rate and rhythm.

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What is the purpose for heart cauterization?

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