Ultrasound diagnostic apparatus

Details Ultrasound diagnostic apparatus Ultrasound diagnostic apparatus

1996-11-20

1998-07-28

Jaworski, Francis

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

600453, A61B 800

Patent

active

057856540

ABSTRACT:
An ultrasound beam is repeatedly transmitted and received to and from an object, so that an echo signal is repeatedly obtained. A velocity of each of a plurality of portions on the ultrasound beam is calculated based on the echo signal. A position of at least one specific portion of the plurality of portions is tracked in as it changes with the passage of time based on the velocity to obtain a path where the specific portion moves. Conventionally the change of brightness of the M-mode image was tracked to obtain the path. According to the present invention, since the path is obtained based on the velocity having high resolution, the accuracy of track can be improved.

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H. Kanai et al., "A New Method for Measuring Small Local Vibrations in the Heart Using Ultrasound", IEEE Transactions on Biomedical Engineering, vol. 40, No. 12, pp. 1233-1242, 1993.
R.W. Stadler et al., "The Application of Echo-Tracking Methods to Endothelium-Dependent Vasoreactivity and Arterial Compliance Measurements", Ultrasound in Med. & Biol., vol. 22, No. 1, pp. 35-42, 1996.
A.P.G. Hoeks et al., "Assessment of the Distensibility of Superficial Arteries", Ultrasound in Med. & Biol., vol. 16, No. 2, pp. 121-128, 1990.
A.P.G. Hoeks et al., "Transcutaneous Detection of Relative Changes in Artery Diameter", Ultrasound in Med. & Biol., vol. 11, No. 1, pp. 51-59, 1985.

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