Assessment of the frequency dependence of acoustic properties on material, composition, and scatterer size of the medium

Ino, Mai; Yoshida, Kenji; Hirata, Shinnosuke; Ito, Kenichi; Yamaguchi, Tadashi

doi:10.1007/s10396-022-01235-1

Cited by 2 publications

(3 citation statements)

References 47 publications

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“…In previous studies on the influence of sound field characteristics, the amplitude envelope and backscattering properties of phantoms containing 5-40 μm acrylic scatterers were evaluated. 7,43,46) Using nylon spheroids to model normal liver, the scattering intensity from acrylic spheroids with diameters of 30 or 40 μm was too strong to mimic scattering from real fat droplets. Therefore, 10 μm acrylic spheroids were chosen to visualize the effect of small fat droplets on high-resolution measurements using HF ultrasound.…”

Section: Tissue-mimicking Phantoms With Multiple Types Of Scatterersmentioning

confidence: 99%

“…Therefore, quantitative ultrasound (QUS) has been proposed as a quantitative evaluation method for ultrasound imaging. QUS includes methods to estimate the speed of sound, [1][2][3][4] attenuation coefficient, [5][6][7] backscatter coefficient, [8][9][10][11] and shear wave velocity [12][13][14][15] and methods to generate amplitude envelope statistics of the probability density function (PDF) of the echo signal. QUS methods have been applied to various biological tissues, such as the skin, 16,17) breast, 18,19) blood vessels, [20][21][22] and lymph nodes.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, we have applied QUS to phantoms and organs excised from rats using a single HF, concave transducer and have shown that high-resolution analysis of amplitude envelope characteristics and backscattering coefficient analysis are feasible for practical use. 7,42,43) However, the use of array probes is essential for the evaluation of biological tissues in clinical practice. Although it is difficult to observe the liver in vivo using HF ultrasound at present, this study aimed to apply HF QUS to the liver in the abdominal region.…”

Section: Introductionmentioning

confidence: 99%

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Relationship between transmission/reception conditions of high-frequency plane wave compounding and evaluation accuracy of extended amplitude envelope statistics

Higa,

Ketterling,

Mamou

et al. 2024

Jpn. J. Appl. Phys.

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In previous studies, Double-Nakagami (DN) model, which is an amplitude envelope statistics method of quantitative ultrasound (QUS) was proposed for fatty liver evaluation, and the possibility of fatty property evaluation was suggested from the studies using a single concave transducer and rat livers. In this paper, five high-frequency linear array probes were used to investigate for clinical application. After confirmation of the influence of the sound field characteristics of the system and transmission/reception conditions on evaluation accuracy, QUS parameters were evaluated with DN model and other basic statistical models on fatty liver mimicking phantoms and rat livers. Correlations between fat gain and multiple QUS parameters were confirmed, suggesting that the combination of high-frequency linear array probes and a DN model may be a highly robust method for quantifying fatty liver.

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Section: Tissue-mimicking Phantoms With Multiple Types Of Scatterersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Relationship between transmission/reception conditions of high-frequency plane wave compounding and evaluation accuracy of extended amplitude envelope statistics

Higa,

Ketterling,

Mamou

et al. 2024

Jpn. J. Appl. Phys.

Self Cite

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Estimation error in speed of sound caused by rotation of measured cross-section from short-axis plane of blood vessels: a preliminary study

Mori,

Onoda,

Arakawa

et al. 2023

J Med Ultrasonics

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Purpose Estimating the speed of sound (SoS) in ultrasound propagation media is important for improving the quality of B-mode images and for quantitative tissue characterization. We have been studying a method for estimating the SoS by measuring the reception time distribution of waves scattered from a scatterer at the elements in a probe. Previously, the measurement cross section was assumed to be perpendicular to the long axis of the blood vessel. In this study, we experimentally investigated the relationship between rotation angle $$\theta$$ θ of the probe relative to the short-axis plane of the blood vessel and the estimated SoS, $$\widehat{c}$$ c ^ . Methods Water tank and phantom experiments were conducted to investigate the characteristics of $$\widehat{c}$$ c ^ and element signals when the probe was rotated. Results The received signal powers at the elements around both edges greatly decreased as $$\theta$$ θ increased. We introduced a parameter representing the decrease in power, $${P}_{\mathrm{dec}}$$ P dec , in the received signal at the elements at both edges relative to the center element. $$\widehat{c}$$ c ^ was estimated to be larger as $$\theta$$ θ increased, especially for $$\theta \ge 30^\circ$$ θ ≥ 30 ∘ . $${P}_{\mathrm{dec}}$$ P dec also increased as $$\theta$$ θ increased. An approximately proportional relationship existed between the errors in $$\widehat{c}$$ c ^ and $${P}_{\mathrm{dec}}$$ P dec . Conclusion Based on these results, we can distinguish between the presence and the absence of SoS misestimations using the difference in power among the elements in the received signal. In the absence of misestimation, we can obtain the true SoS, even if the target has a non-negligible size, by applying our previously proposed methods.

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Assessment of the frequency dependence of acoustic properties on material, composition, and scatterer size of the medium

Cited by 2 publications

References 47 publications

Relationship between transmission/reception conditions of high-frequency plane wave compounding and evaluation accuracy of extended amplitude envelope statistics

Relationship between transmission/reception conditions of high-frequency plane wave compounding and evaluation accuracy of extended amplitude envelope statistics

Estimation error in speed of sound caused by rotation of measured cross-section from short-axis plane of blood vessels: a preliminary study

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