Summary
The continued development of digital imaging techniques has resulted in advanced diagnostic capabilities for the assessment of coronary artery disease and myocardial ischemia. Enhancement of vascular and tissue opacification, as well as the extraction of perfusion parameters are the basic procedures in digital coronary angiography. In this survey different acquisition and processing modes are discussed within the limitations of the spatial and temporal resolution of current imaging systems.
Coronary artery studies involve morphologic and flow analysis. The use of a 1024 x 1024 matrix reveales comparable spatial resolution as the conventional cinefilm; however, at this resolution the temporal resolution is limited to rates of 8 images/sec. The 512 x 512 image matrix allows real-time acquisition with a rate of 30 images/sec and is practical for most of the diagnostically relevant problems. Temporal aspects of vascular contrast flow have even been assessed with a 256 x 256 matrix, specifically taken advantage of the improved signal-to-noise ratio per picture element.
Myocardial imaging is another important application that provides dimensional measurements of the left ventricular wall, as well as detection of regional perfusion annomalies. ECG-gated image integration and subtraction are the basic processing steps. Finally, digital densitometry has been developed to assess myocardial flow and flow reserve quantitatively.
This chapter ends with a discussion of an economical solution for digital storage requirements of coronary angiograms.
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© 1986 Martinus Nijhoff Publishers, Dordrecht
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Bürsch, J.H., Heintzen, P.H., Moldenhauer, K. (1986). Digital imaging modalities for coronary and myocardial wall studies. In: Reiber, J.H.C., Serruys, P.W. (eds) State of the Art in Quantitative Coronary Arteriography. Developments in Cardiovascular Medicine, vol 53. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-4279-0_3
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DOI: https://doi.org/10.1007/978-94-009-4279-0_3
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