Ultrasound imaging system with improved scan conversion

Details Ultrasound imaging system with improved scan conversion Ultrasound imaging system with improved scan conversion

1976-08-02

1977-11-15

Queisser, Richard C.

Measuring and testing

Vibration

By mechanical waves

128 2V, 358112, 73629, G01N 2900, A61B 1000

Patent

active

040580016

ABSTRACT:
In an improved system for medical imaging employing a transducer for transmitting and detecting ultrasonic vibrations, a digital scan converter accepts echo signals detected by the transducer and transducer position signals identifying the point of origin of the signals in a scanning plane transversely oriented relative to the body of the patient under study. The amplitudes of the echoes detected are stored at memory locations associated with the points of origin of the echoes. Peak detection analysis is performed on large echoes emanating from higher impedance tissue interfaces within the scanning plane, while cumulation and normalization analysis is performed on small echoes emanating from low impedance tissue interfaces within the scanning plane. Sensitivity to otherwise unobtainable image details, signal to noise ratio, and freedom from distortions is maximized, yet the improved system may be used

REFERENCES:
patent: 3856985 (1974-12-01), Yokoi et al.
patent: 3857052 (1974-12-01), Beller
patent: 3954098 (1976-05-01), Dick et al.

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