Mechanical sector scanner head and power train
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United States of America Patent
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May 18, 1982
Grant Date -
N/A
app pub date -
Aug 15, 1980
filing date -
Aug 15, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A curved faced, disc shaped transducer and an oppositely facing, circular angularly disposed mirror form the transmission and reception path of a mechanical sector scan imaging system. The transducer and mirror are mounted on a common axis, and a shaft upon which the mirror is affixed oscillates about that axis. Through a belt drive mechanism, a motor provides the oscillating motion, in turn scanning the ultrasound beams through the subject by virtue of the mirror motion. An optical encoder records positional information from the motor, for coordination of the mirror oscillation with transducer signals, and thereby for the assembly of a composite image.
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