Ultrasound diagnosis apparatus
First Claim
1. An ultrasound diagnosis apparatus for generation of image data, the ultrasound diagnosis apparatus comprising:
- a transmission/reception control unit configured to set a plurality of ultrasound transmission/reception directions to an object;
an ultrasound probe having a plurality of transducers;
a transmission/reception unit configured to produce drive signals having a polarity phase difference between first and second drive signals for transmission of out-of-phase ultrasound transmissions centered only around a single ultrasound fundamental frequency f0 into the object and configured to receive reception signals from the object at the ultrasound transmission/reception directions;
a harmonic wave component extracting unit configured to extract harmonic wave components in the reception signals by performing summation of a plurality of the reception signals sequentially received through the transmission/reception unit;
a reception signals processing unit configured to generate first ultrasound data by performing a logarithmic conversion of a fundamental wave component included in the reception signals, and to generate second ultrasound data by normalizing the harmonic wave components by an amplitude of the fundamental wave component and thereafter performing a logarithmic conversion of the harmonic wave components in the reception signals;
a subtraction unit configured to perform a subtraction between the first ultrasound data and the second ultrasound data; and
an image data generating unit configured to generate said image data based on the subtracted ultrasound data acquired along each of the transmission/reception directions.
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Accused Products
Abstract
An ultrasound diagnosis apparatus for generation of image data based on harmonic wave components of ultrasound reception signals. The ultrasound diagnosis apparatus includes a transmission/reception control unit configured to set a plurality of ultrasound transmission/reception directions to an object, an ultrasound probe, a transmission/reception unit, a harmonic wave component extracting unit configured to extract harmonic wave components in the reception signals, a reception signals processing unit, a subtraction unit configured to perform a subtraction between different ultrasound data sets, and an image data generating unit configured to generate the image data based on the subtracted ultrasound data acquired along each of the transmission/reception directions.
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Citations
19 Claims
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1. An ultrasound diagnosis apparatus for generation of image data, the ultrasound diagnosis apparatus comprising:
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a transmission/reception control unit configured to set a plurality of ultrasound transmission/reception directions to an object; an ultrasound probe having a plurality of transducers; a transmission/reception unit configured to produce drive signals having a polarity phase difference between first and second drive signals for transmission of out-of-phase ultrasound transmissions centered only around a single ultrasound fundamental frequency f0 into the object and configured to receive reception signals from the object at the ultrasound transmission/reception directions; a harmonic wave component extracting unit configured to extract harmonic wave components in the reception signals by performing summation of a plurality of the reception signals sequentially received through the transmission/reception unit; a reception signals processing unit configured to generate first ultrasound data by performing a logarithmic conversion of a fundamental wave component included in the reception signals, and to generate second ultrasound data by normalizing the harmonic wave components by an amplitude of the fundamental wave component and thereafter performing a logarithmic conversion of the harmonic wave components in the reception signals; a subtraction unit configured to perform a subtraction between the first ultrasound data and the second ultrasound data; and an image data generating unit configured to generate said image data based on the subtracted ultrasound data acquired along each of the transmission/reception directions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for generating image data based on harmonic wave components of ultrasound reception signals, comprising:
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producing a plurality of drive signals having a polarity phase difference between first and second drive signals for transmission of out-of-phase ultrasound transmissions centered only around a single ultrasound fundamental frequency f0 at plural directions into an object; receiving a plurality of reception signals from the object; extracting harmonic wave components in the reception signals by summing a plurality of sequentially received reception signals; generating first ultrasound data by performing a logarithmic conversion of a fundamental wave component included in the reception signals; generating second ultrasound data by normalizing the harmonic wave components by an amplitude of the fundamental wave component and thereafter performing a logarithmic conversion of the harmonic wave components included in the reception signals; subtracting the first ultrasound data and the second ultrasound data; and generating said image data based on the subtracted ultrasound data acquired along the plural directions. - View Dependent Claims (13, 14, 15)
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16. An ultrasound diagnosis apparatus for generation of image data based on harmonic wave components of ultrasound reception signals, comprising:
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a transmission/reception control unit configured to set a plurality of ultrasound transmission/reception directions to an object; an ultrasound probe having a plurality of transducers; a transmission/reception unit configured to produce drive signals having a polarity phase difference between first and second drive signals for transmission of out-of-phase ultrasound transmissions centered only around a single ultrasound fundamental frequency f0 into the object and configured to receive reception signals from the object at the transmission/reception directions; means for extracting harmonic wave components in the reception signals by summing a plurality of sequentially received reception signals; means for generating first ultrasound data by performing a logarithmic conversion of a fundamental wave component included in the reception signals; means for generating second ultrasound data by normalizing the harmonic wave components by an amplitude of the fundamental wave component and thereafter performing a logarithmic conversion of a harmonic wave component included in the reception signals; means for subtracting the first ultrasound data and the second ultrasound data; and means for generating said image data based on the subtracted ultrasound data acquired along the plural directions. - View Dependent Claims (17, 18, 19)
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Specification