Keeping sharing about instrumental methods a diagnosis, and theme for this issue is scanning for vessels of head brain and neck, ultrasound for legs vessels.
Effect for Doppler in colour.
Duplex and triplex scanning of vessels a head brain and neck are having to ultrasound diagnosis method, which ability for ultrasound ways for right frequency transferring through organism s tissues.
And in these methods for testing using effect Doppler, as in changing for signal frequency depending from speed of erythrocytes in blood. Thus you can define in vessels moving her organ .
Originally, Doppler s effect used in ultrasound dopplerograph for defining blood flow peculiarities.Dopplex scanning is improved in this method, and allowed to rate blood current and to check on a screen vessel walls, adjacent tissues.
Triplex scanning added to these both functions, a third visualization. Now diagnosis doctor on a screen see is a not black-white image flat, but a coloured three-dimensional picture, moving a blood in veins and arteries, showed in coloured, allowing right defining a pathology for walls of vessels, changing theirs thickness or plaques having, hardening for blood current .And a testing is very visual, thus by stats a duplex and triplex scanning are not different from each other.
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