CALCULATION AND PRESENTATION OF VECTOR VELOCITY VALUES IN A THREE-DIMENSIONAL SPACE

摘要

The invention relates to an ultrasound system for detecting and evaluating three-dimensional velocity data records of objects (H) with the aid of ultrasounds using the Doppler method. Said ultrasound system comprises at least one ultrasonic source (28) which is constructed in such a way that it emits ultrasounds in the form of a three-dimensional funnel in a principal direction (RA, RB, RC), at least one ultrasonic detector (28) for detecting ultrasound waves reflected by the object (H) and the Doppler displacement thereof. The ultrasonic system also comprises an evaluation device which is linked by means of signals to the ultrasonic source (28) and the ultrasonic receiver (28) constructed in such a way that it calculates the three-dimensional vector velocity field of the object (H) using at lest three records of three-dimensional scalar velocity data which are detected by scanning the object (H) with the ultrasonic source (28) from at least three predetermined scanning positions (A, B, C) in the three independent directions (RA, RB, RC) of the ultrasonic funnels which are linear with respect to each other, and by receiving the ultrasound waves which are reflected by the object (H) and come from the Doppler shift with the aid of the ultrasonic detector (28).