Ultrasonic diagnosing system

• Main Author: SEO; YASUTSUGU
• Format: Patent
• Language: English
• Published: 30.01.1990
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; MEDICAL OR VETERINARY SCIENCE; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; SURGERY; TESTING

An ultrasound diagnosing system includes an ultrasound transmission/reception section, a cross-sectional imaging section, a phase detection section, a filter section, a calculation section, a correction section and a display section. The cross-sectional imaging section causes the ultrasound transmission/reception section to perform ultrasound scanning for sending and receiving ultrasound beams a plurality of times at an identical beam position, and detects cross-sectional information on a living subject from the echo signals. The phase detection section performs quadrature detection of the echo signals. The filter section eliminates low-frequency clutter components from two sets of detected echo components. The calculating section calculates an average blood flow speed by using the outputs of the filter section by autocorrelation. The correction section substracts the average values of the echo components from the two sets of the echo components before the calculation results are obtained, to eliminate the DC components included in the echo components. The display section superposes two-dimensional information on the average blood flow speed from the calculating section on the cross-sectional image and displays a superposed image.