Abstract
Coronary arteriograms are the clinical reference standard for assessing the status of coronary atherosclerosis. Because of the low sensitivity of conventional x-ray systems to contrast agents, the angiographic procedure requires the direct injection of the contrast agent into the coronary arteries. The hazards and expense associated with arterial invasion severely restrict the use of this method and have led to development of the presènt transvenous approach.1–3
© 1986 Optical Society of America
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