Making use of ultrasonic imaging methods for diagnostic functions in veteri nary medicine and animal science has lagged far behind their usage in human medicine. In the area of domestic animal recreation, diagnostic ultrasono graphy has a reasonably short history. Reports on B-mode scanning initially appeared as late as 1969, when Stouffer and co-workers utilized it for counting foetal numbers in late gestation sheep. After Lindahl had actually re-evaluated the potential of two-dimensional ultrasonography for pregnancy diagnosis in sheep in 1976, outcomes of the first big scale field-trials by Fowler and Wilkins on predicting foetal numbers during the very first half of gestation in sheep were published as recently as1980 In this year likewise the first paper, by Palmer and colleagues, on ultrasonic scanning of the uterus and ovaries in the mare appeared. The improvement of diagnostics which was accomplished by the application of this technique is shown by its present routine usage in clinical equine practice and sheep breeding. Offe sound a precise early pregnancy diagnosis in types such as the horse, cow, sheep, goat, pig and canine, ultrasonography enables the visualization of ovarian and uterine structures for the identification of both physiological and pathological conditions. In this way it replaces or supplements the more common diagnostic strategies used by the general practitioner up until now. Ultrasonography has actually likewise opened several brand-new lines of research study for clini cians and research workers.
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