FECK
发表于 2025-3-26 23:00:09
Percutaneously implantable endo-coronary prosthesisve implanted the stent in 25 coronary patients; in 24 of these patients this was done post-dilatation to prevent coronary restenosis, and in 1 case the stent was placed at a stenosis in a venous coronary artery bypass graft. There were 15 event-free implantations with excellent angiographic follow-u
租约
发表于 2025-3-27 04:58:00
A coronary endoprosthesis to prevent restenosis and acute occlusion after percutaneous angioplasty: te improvements of equipment as well as drug treatment the restenosis rate is about 30% and the rate of acute occlusions is about 5% . One way to overcome both these problems is to give mechanical support to the vessel wall using an endoprosthesis or stent. Such a device will also smooth the en
征税
发表于 2025-3-27 07:12:09
Accurate densitometric quantification requires strict attention to the physical characteristics of Xors in densitometric measurement of both absolute and relative iodine concentrations are substantial unless corrections are applied to the raw data. Practical densitometric corrections for scatter and veiling glare are presented and validated under simulated clinical conditions. These investigations
爱社交
发表于 2025-3-27 11:04:13
Morphologic and densitometric quantitation of coronary stenoses; an overview of existing quantitatioegment. Furthermore, the question arises how the data from biplane analyses are being handled. Densitometric techniques have been developed for the assessment of absolute and relative cross-sectional area stenosis from a single angiographie view. In these cases data must be presented on calibration
foodstuff
发表于 2025-3-27 17:16:12
Assessment of the anatomic and functional severity of coronary arterial stenosis: new measuring techradle with saline provides the necessary coupling material. Ultrasonic images can then be analyzed for lumen area and arterial wall thickness measurements; atherosclerotic plaques are easily visualized..We initially validated lumen area and wall thickness measurements from frozen frame images of ani
悲痛
发表于 2025-3-27 18:18:39
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平
发表于 2025-3-27 22:47:56
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Inexorable
发表于 2025-3-28 04:16:43
Comparison of automated edge detection and videodensitometric quantitative coronary arteriographyd cylindrical chambers ranging from 0.5–5.0 mm diameter. Although both methods were statistically equivalently accurate, automated edge detection tended to overestimate diameters less than 1.0 mm. Dependence of stenosis severity estimation on the arteriographic projection was evaluated in 13 patient
A保存的
发表于 2025-3-28 09:29:10
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organic-matrix
发表于 2025-3-28 14:27:45
Theoretical and practical aspects of digital angiography for quantitative coronary flow studies of the perfused vasculature. There is theoretical and practical evidence, that the reliability of angiographically determined flow is essentially dependent on specific angiographic requirements, among which selective coronary injections with high flow rates and concomitant backflow of contrast medi