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- W77643088 abstract "In the first part of this chapter the requirements for modern X-ray systems suitable for coronary arteriography are defined. It may be concluded that all modern X-ray systems from the different vendors satisfy the basic requirements for adequate coronary arteriography, although for some applications or institutions small but relevant differences do exist. Secondly, an overview of the currently most widely used digital cardiac imaging systems is presented. On the basis of the data presented, the following conclusions can be drawn: 1) all reviewed systems allow image acquisition at 25 or 30 frames/s at the 5122 matrix size or even 10242 size; 2) sufficient real-time disk space can nowadays be made available to store all the pictorial information acquired in a catheterization laboratory during a single day; and 3) a universal longterm storage medium (archival of the data) with the same degree of transportability, durability and cost of cinefilm is not yet available. In the third part of this chapter the state-of-the-art analytical software packages for quantitative digital (Philips, DCI/ACA-package) and cine (MEDIS, CMS software) coronary arteriography are described and preliminary validation results presented. It has been shown for both approaches that by virtue of modifications in the edge detection software to correct for the limited resolution of the X-ray imaging chain, vessel sizes down to 0.66 mm can be measured accurately and precisely. Also, inter- and intra-observer variability of absolute obstruction dimensions with the ACA-package were found to be equal to 0.11 mm and 0.10 mm, respectively. This means that analytical techniques are now available to the angiographer for the objective assessment of the optimal choice of recanalization devices and for the instantaneous assessment of the effects of such recanalization procedures during the cardiac catheterization based an on-line acquired digital data. Finally, for the off-line assessment of the morphology of coronary vessels for multi-center, longitudinal coronary research studies on the basis of cinefilm, a robust quantitative coronary arteriographic software package is available as well." @default.
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- W77643088 date "1993-01-01" @default.
- W77643088 modified "2023-10-18" @default.
- W77643088 title "Quantitative coronary arteriography: equipment and technical requirements" @default.
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- W77643088 doi "https://doi.org/10.1007/978-94-011-1854-5_5" @default.
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