Ultrasonic diagnosing apparatus

Details Ultrasonic diagnosing apparatus Ultrasonic diagnosing apparatus

2006-04-18

2006-04-18

Imam, Ali (Department: 3737)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C600S447000, C600S459000

Reexamination Certificate

active

07029445

ABSTRACT:
An ultrasonic diagnostic apparatus transmits an ultrasonic beam into an object to be examined using a multi-ring arrangement formed with transducer elements arrayed two-dimensionally in concentric rings and receives an echo so as to create a tomogram or a three-dimensional image of the object. To correct for focusing error due to the difference in length of ultrasound propagating paths, the ultrasonic diagnostic apparatus groups the transducer elements so as to form a multi-ring arrangement, transmits/receives ultrasonic beams with a delay to each ring of the multi-ring arrangement and scans the ultrasonic beam so as to create an ultrasonic image, measures delay error due to presence of a sound speed non-uniformity portion of the object and changes either the coupling of the multi-ring or the delay time based on the measurement error.

REFERENCES:
patent: 4641660 (1987-02-01), Bele
patent: 08317923 (1996-12-01), None

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