Ultrasound Diagnostic Device Multi-Frequency Tissue Characterization
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Solution Overview
Problem
Current ultrasound diagnostic devices face challenges in accurately diagnosing tissue characteristics, particularly when lesions have large or non-uniform scattering structures, as they struggle to analyze dispersion values that deviate from the Rayleigh distribution, leading to suboptimal tissue characterization.
Innovation Solution
The ultrasound diagnostic device employs multiple transducers to transmit and receive ultrasound at varying frequencies, calculating an index based on the relationships between signals received at different frequencies to discern micro-structural changes in sound velocity and attenuation, thereby enhancing the accuracy of tissue characterization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If single-frequency ultrasound transmission is used, then device complexity is reduced, but measurement precision of tissue characteristics deteriorates
Solution Approach 1:
The patent applies parameter changes by transmitting ultrasound at multiple different frequencies and analyzing the frequency-dependent characteristics of echo signals. The calculation unit computes tissue characteristic indices by comparing echo signal parameters across multiple frequencies, enabling accurate tissue characterization without requiring complex multi-transducer arrays.
2Measurement precision
If multiple frequencies are used for ultrasound transmission, then measurement precision of tissue characteristics is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamics by dynamically adjusting the ultrasound transmission frequency across multiple values during the diagnostic process. The system transmits ultrasound pulses at different frequencies sequentially and processes the echo signals to extract tissue characteristic indices, achieving high measurement precision through frequency modulation rather than hardware complexity.
3Ease of operation
If Rayleigh distribution assumption is used for scattering structures, then analysis simplicity is maintained, but measurement precision deteriorates when lesions have large or non-uniform scattering structures
Solution Approach 1:
The patent overcomes the Rayleigh distribution limitation by introducing frequency as an additional parameter for analysis. The calculation unit computes tissue characteristic indices by examining how echo signal parameters vary with frequency, which provides accurate tissue characterization even when scattering structures deviate from Rayleigh distribution assumptions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for precise measurement of micro-structural non-uniformity and improved detection of lesions by optimizing frequency selection based on lesion development stages, leading to more accurate tissue characteristic diagnosis.
Implementation Method 1
an ultrasound probe including plural ultrasound transducers that transmit ultrasound toward an imaging subject, receive ultrasound reflected from the imaging subject, and output ultrasound detection signals
Implementation Method 2
an alteration unit that alters transmission frequencies of the ultrasound transmitted from the ultrasound probe or reception frequencies of the ultrasound received by the ultrasound probe
Implementation Method 3
a calculation unit that calculates an index for diagnosing a tissue characteristic based on a relationship between reception signals of at least two different ultrasound transducers for at least two different frequencies of the transmission frequencies or reception frequencies altered by the alteration unit
Data Source
AI summary
An ultrasound diagnostic device includes an ultrasound probe including plural ultrasound transducers that transmit ultrasound toward an imaging subject, receive ultrasound reflected from the imaging subject, and output ultrasound detection signals; an alteration unit that alters transmission frequencies of the ultrasound transmitted from the ultrasound probe or reception frequencies of the ultrasound received by the ultrasound probe; and a calculation unit that calculates an index for diagnosing a tissue characteristic based on a relationship between reception signals of at least two different ultrasound transducers for at least two different frequencies of the transmission frequencies or reception frequencies altered by the alteration unit.