Ultrasonic doppler diagnostic apparatus and measuring method of diagnostic parameter
First Claim
1. An ultrasonic Doppler diagnostic apparatus comprising:
- a Doppler signal detecting unit which detects a Doppler signal at a predetermined region from a reception signal obtained by performing ultrasonic wave transmission/reception with respect to an object to be examined;
a spectrum calculating unit which calculates a frequency spectrum of the Doppler signal;
a trace waveform generating unit which generates a trace waveform representing a temporal change in a predetermined spectrum component in the frequency spectrum;
a CAB processing unit which generates CAB data by extracting a trace waveform for each cardiac cycle from the generated trace waveform, and arraying said plurality of extracted trace waveforms along a first time axis representing a time direction associated with a heart rate and a second time axis representing a time direction within one cardiac cycle;
a statistical processing unit which generates a diagnostic waveform by performing statistical processing using the CAB data;
a storage unit which stores a selection criterion;
a feature amount selecting unit which automatically selects a feature amount for the diagnostic waveform on the basis of the stored selection criterion;
a diagnostic parameter measuring unit which measures a diagnostic parameter on the basis of the feature amount; and
a display unit which displays a measurement result on the diagnostic parameter.
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Accused Products
Abstract
A Doppler signal detecting unit 42 and spectrum calculating unit 44 measure a Doppler spectrum from a reception signal obtained by ultrasonic wave transmission/reception with respect to a diagnosis region of an object to be examined. A local maximum/minimum detecting unit 62 detects a plurality of local maximum/minimum pairs with respect to a trace waveform generated by a trace waveform generating unit 61 on the basis of the Doppler spectrum. A feature amount selecting unit 64 selects a desired waveform from a plurality of local maximum/minimum pairs in a predetermined cardiac cycle set by a cardiac cycle setting unit 63 by using heartbeat information from a living body measuring unit 9 on the basis of a preset selection criterion. A diagnostic parameter is measured on the basis of the position information or amplitude information of the selected waveform.
49 Citations
34 Claims
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1. An ultrasonic Doppler diagnostic apparatus comprising:
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a Doppler signal detecting unit which detects a Doppler signal at a predetermined region from a reception signal obtained by performing ultrasonic wave transmission/reception with respect to an object to be examined;
a spectrum calculating unit which calculates a frequency spectrum of the Doppler signal;
a trace waveform generating unit which generates a trace waveform representing a temporal change in a predetermined spectrum component in the frequency spectrum;
a CAB processing unit which generates CAB data by extracting a trace waveform for each cardiac cycle from the generated trace waveform, and arraying said plurality of extracted trace waveforms along a first time axis representing a time direction associated with a heart rate and a second time axis representing a time direction within one cardiac cycle;
a statistical processing unit which generates a diagnostic waveform by performing statistical processing using the CAB data;
a storage unit which stores a selection criterion;
a feature amount selecting unit which automatically selects a feature amount for the diagnostic waveform on the basis of the stored selection criterion;
a diagnostic parameter measuring unit which measures a diagnostic parameter on the basis of the feature amount; and
a display unit which displays a measurement result on the diagnostic parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An ultrasonic Doppler diagnostic apparatus comprising:
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a Doppler signal detecting unit which detects a Doppler signal at a predetermined region from a reception signal obtained by performing ultrasonic wave transmission/reception with respect to an object to be examined;
a spectrum calculating unit which calculates a frequency spectrum of the Doppler signal;
a trace waveform generating unit which generates a trace waveform representing a temporal change in a predetermined spectrum component in the frequency spectrum;
a storage unit which stores a selection criterion;
a feature amount selecting unit which automatically selects a feature amount with respect to the trace waveform in a predetermined cardiac cycle of the object on the basis of the stored selection criterion;
a diagnostic parameter measuring unit which measures a diagnostic parameter on the basis of the feature amount; and
a display unit which displays a measurement result on the diagnostic parameter. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A measuring method of diagnostic parameter comprising:
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detecting a Doppler signal at a predetermined region from a reception signal obtained by performing ultrasonic wave transmission/reception with respect to an object to be examined;
calculating a frequency spectrum of the Doppler signal;
generating a trace waveform representing a temporal change in a predetermined spectrum component in the frequency spectrum;
generating CAB data by extracting a trace waveform for each cardiac cycle from the generated trace waveform, and arraying said plurality of extracted trace waveforms along a first time axis representing a time direction associated with a heart rate and a second time axis representing a time direction within one cardiac cycle;
generating a diagnostic waveform by performing statistical processing using the CAB data;
automatically selecting a feature amount with respect to the diagnostic waveform on the basis of a stored selection criterion;
measuring a diagnostic parameter on the basis of the feature amount; and
displaying a measurement result on the diagnostic parameter.
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34. A measuring method of diagnostic parameter comprising:
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detecting a Doppler signal at a predetermined region from a reception signal obtained by performing ultrasonic wave transmission/reception with respect to an object to be examined;
calculating a frequency spectrum of the Doppler signal;
generating a trace waveform representing a temporal change in a predetermined spectrum component in the frequency spectrum;
automatically selecting a feature amount with respect to the trace waveform in a predetermined cardiac cycle of the object on the basis of a stored selection criterion;
measuring a diagnostic parameter on the basis of the feature amount; and
displaying a measurement result on the diagnostic parameter.
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Specification