Abstract
Angiocardiographic methods for quantitative analysis of the dynamic geometry of the heart are described. 3D spatial ‘reconstruction’ of the left or right ventricle from their traced and digitized contours after contrast injection allow the generation of simplified, but clinically useful 3D models of the ventricles which form the basis for left and right ventricular volume determination and contraction pattern analysis. These models can be improved by combining the biplane density profiles of the projection images with some a priori knowledge.
For many practical purposes a ‘3-D’ dynamic analysis of the cardiovascular system — considering the time as the third dimension — has been proved to be extremely useful. From digitized time series of 2-D projection images, on- and off-line processing procedures like subtraction of the background is possible, allowing contrast enhancement and intravenous, or selective angiocardiography, with reduced amounts of contrast material. The most promissing applications of dynamic digital processing techniques are the so-called functional or parametric imaging procedures. Since the whole image series represents a matrix of pixel densograms, various time and volume parameters can be obtained. Using this approach, regional flow and perfusion patterns can be obtain from different parts of the circulation and central as well as regional arterial blood flow can be determined quantitatively.
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References
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© 1985 Martinus Nijhoff Publishers, Dordrecht
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Heintzen, P.H., Brennecke, R., Bürsch, J.H., Hahne, H.J., Onnasch, D.W.G., Moldenhauer, K. (1985). Three-dimensional analysis of the cardiovascular system. In: Sideman, S., Beyar, R. (eds) Simulation and Imaging of the Cardiac System. Developments in Cardiovascular Medicine, vol 43. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-4992-8_12
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DOI: https://doi.org/10.1007/978-94-009-4992-8_12
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