Ultrasonic diagnostic apparatus

Details Ultrasonic diagnostic apparatus Ultrasonic diagnostic apparatus

2006-06-15

2011-11-08

Cattungal, Sanjay (Department: 3768)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C600S443000

Reexamination Certificate

active

08052602

ABSTRACT:
An object of the invention is to provide an ultrasonic diagnostic apparatus that can conduct elastic modulus measurement with high accuracy without enlarging the circuit scale.A calculator3uses a signal from a receiver-transmitter2to calculate the motion velocity or the move displacement of body tissue and the strain variation of the body tissue. A frequency analyzer4conducts frequency analysis of the motion velocity and the move displacement of the body tissue found in the calculator3. A strain induced by stress and elastic wave separator5separates a frequency component with strain of an arterial wall caused by blood pressure change caused by pulsation of the heart, a frequency component of vibration caused by flow of blood into the lumen of artery, and a frequency component of noise based on the determination result of the frequency analyzer4. An elastic modulus calculator6calculates the elastic modulus of the body tissue based on the calculation result of the motion of the body tissue obtained in the calculator3, etc.

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