(under subclass 440) Subject matter wherein the display mode includes an imaging display which receives ultrasonic echo information in the course of transducer scanning operation and the echo signals are utilized to modulate brightness of the display at each point scanned and processed to produce successive scan lines on the display; and a second separate transducer means usually oriented at an angle with respect to the perpendicular to the skin of the body, such that a beam emitted from said transducer has a component in the direction of flowing blood in blood vessels flowing beneath said skin, which blood flow representation is processed for display.
