Abstract
In coronary artery disease the severity of a given luminal obstruction is dependent on the amount of reduction of the luminal area by fixed calcified stenosis and the degree of constriction of a normal segment of the vascular wall. Thus there are short-term and long-term variations in the degree of coronary stenosis (1, 6, 14, 16). Attempts have been made to quantify the anatomic and functional severity of coronary stenosis: apart from angiographic assessment (5, 9, 10, 15), assessment of flow with Doppler catheters, thallium imaging, PET scanning and intravascular ultrasound have been tried. The most widely used way of quantification is quantitative angiography, but it must be born in mind that angiography shows only the lumen opacified by contrast medium, while characteristics of the vessel wall can hardly, if ever, be discerned (12, 18).
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© 1989 Springer-Verlag Berlin Heidelberg
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v. Arnim, T., Hengge, M., Prasil, J., Höfling, B. (1989). Advances in x-ray equipment — digital subtraction angiography with on-line quantification. In: Höfling, B., v. Pölnitz, A., Erdmann, E., Steinbeck, G., Strauer, B.E. (eds) Interventional Cardiology and Angiology. Steinkopff, Heidelberg. https://doi.org/10.1007/978-3-662-12114-6_3
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DOI: https://doi.org/10.1007/978-3-662-12114-6_3
Publisher Name: Steinkopff, Heidelberg
Print ISBN: 978-3-662-12116-0
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