Two-dimensional contrast echocardiography. I. In vitro development and quantitative analysis of echo contrast agents
نویسندگان
چکیده
منابع مشابه
Myocardial contrast echocardiography: advantages of quantitative analysis.
Every technology yet to be consolidated needs to be compared with reference methods to evaluate its accuracy. Over the past years, contrast echocardiography has been compared against a variety of standards. In experimental studies, myocardial perfusion data from ultrasound have been compared with the measurements of coronary blood flow obtained by labeled microspheres, or with infarct size foll...
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Myocardial contrast echocardiography is a new method for evaluating myocardial perfusion. However, it relies on the marriage of two evolving technologies; ultrasound contrast agents and ultrasound imaging instrumentation. To date, these technologies have only been available to a limited number of researchers throughout the world. Within the next 12 months, both agents and specialised ultrasound...
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A computer algorithm was developed and applied to measure brightness decay rates of myocardial contrast opacification observed with two-dimensional echocardiography (2DE). An agitated mixture of diatrizoate meglumine and saline (Renografin-saline) was injected into the left main coronary artery of 17 closed-chest dogs during the control state as well as after placement of an intracoronary plug ...
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Data on the ultrasonic properties of commercially available contrast agents are limited by being instrument-dependent, especially with regard to their backscattering properties. The present work describes methods of measurements that provide instrument-independent estimations of a contrast agent's attenuation coefficient and integrated backscatter index and provide them as functions of its conc...
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Definitive clinical diagnosis of congenital pulmonary arteriovenous fistula is extremely difficult. In order to evaluate the diagnostic value of echocardiography, 2 cases with suspected pulmonary arteriovenous fistula were studied. In the first case, there was a solitary pulmonary arteriovenous fistula, while in the second multiple minute pulmonary arteriovenous fistulas were illustrated. The s...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 1984
ISSN: 0735-1097
DOI: 10.1016/s0735-1097(84)80424-6