Doppler flow mapping can measure vascular flow profiles: Initial observations and in vitrovalidation
نویسندگان
چکیده
منابع مشابه
Application of color Doppler flow mapping to calculate effective regurgitant orifice area. An in vitro study and initial clinical observations.
BACKGROUND Analogous to stenotic valve area in the assessment of valvular stenosis, regurgitant orifice area (ROA) represents a fundamental parameter to assess valvular insufficiency. However, this parameter has not been routinely available up to now. In this study, we introduce the concept and provide the methodology to calculate regurgitant orifice area noninvasively, based on the analysis of...
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چکیده ندارد.
15 صفحه اولDoppler colour flow mapping: technology in search of an application?
Although Doppler colour flow mapping may considerably reduce the need for conventional pulsed Doppler examination, quantitative flow measurements (particularly by continuous wave Doppler) are still essential in the evaluation of many conditions such as aortic stenosis. Doppler colour flow mapping is an important addition to the accurate non-invasive evaluation of several haemodynamic disorders ...
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Instantaneous cross sectional flow velocity profiles from early mitral flow in 10 healthy men were constructed by time interpolation of the velocity data from each point in sequentially delayed two dimensional digital Doppler ultrasound maps. This interpolation allows correction of the artificially produced skewness of velocities across the flow sector caused by the time taken to scan the flow ...
متن کاملFlow-augmentation device for peripheral vascular Doppler US.
To augment venous blood flow at Doppler ultrasonography (US) of the extremities, a device comprising a blood pressure cuff connected to an external reservoir was tested. Constant and easily controlled pressure was delivered with each compression by the same operator performing US. In 10 patients (four men and six women, aged 54-86 years), discomfort was reduced compared with discomfort during m...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 1991
ISSN: 0735-1097
DOI: 10.1016/0735-1097(91)91589-7