Image forming method and apparatus, and ultrasonic imaging apparatus
AssigneeGE Medical Systems Global Technology Company, LLC
InventorYoichi Suzuki
Life of this patent
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Abstract
In forming an image without clutters indicative of a dynamic state of an echo source containing a harmonic contrast agent based on the Doppler shift of a ultrasonic echo, the variance T of the velocity of the echo source is evaluated based on the Doppler shift, and the signal strength of the image is adjusted depending on the value of variance.
Claims16
A method of forming an image indicative of a dynamic state of an echo source containing a harmonic contrast agent based on a Doppler shift of an ultrasonic echo, said method comprising the steps of:
- evaluating variance of velocity of said echo source based on said Doppler shift of an image of said harmonic contrast agent;
- and
- adjusting signal strength of said image of said echo source depending on threshold value of said variance so that clutter element are prevented from occurring in the image of said echo source.
A method of forming an image indicative of a dynamic state of an echo source containing a harmon's harmnoic contrast agent based on a Doppler shift of an ultrasonic echo, said method comprising the steps of:
- evaluating variance of velocity of said echo source based on said Doppler shift of an image of said harmonic contrast agent;
- and
- forming an image of said echo source based on a signal which is depending on threshold of said variance so that clutter elements are prevented from occurring in the image of the echo source.
An apparatus for forming an image indicative of a dynamic state of an echo source containing a harmonic contrast agent based on a Doppler shift of an ultrasonic echo, said apparatus comprising:
- first means for evaluating variance of velocity of said echo source based on said Doppler shift of an image of said harmonic contrast agent;
- and
- second means for adjusting signal strength of said image depending on threshold value of said variance so that clutter element are prevented from occurring in said image of said echo source.
An apparatus for forming an image indicative of a dynamic state of an echo source containing a harmonic contrast agent based on a Doppler shift of an ultrasonic echo, said apparatus comprising:
- first means for evaluating variance of velocity of said echo source based on said Doppler shift of an image of said harmonic contrast agent;
- and
- second means for forming an image of said echo source based on a signal which is depending on threshold of said variance so that clutter elements are prevented from occurring in said image of said echo source.
Dependencies are inferred from the claim text.