Subwavelength Focusing Beam and Superresolution Ultrasonic Imaging Using a Core-Shell Lens

Leão-Neto, José P.; Cardoso, G. S.; Marques, Alisson S.; Andrade, M. A. B.; Adamowski, Júlio C.; Pavan, Theo Z.; Silva, G. T.; Lopes, J. H.

doi:10.1103/physrevapplied.13.014062

Cited by 18 publications

(7 citation statements)

References 29 publications

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“…However, due to the expensive introduction of breeding sheep, low reproductive rate and, long reproductive cycle, they cannot be popularized rapidly. Young sheep aged 2-5 years old with good phenotype, high production level, stable heredity, healthy physique, normal estrous cycle, no reproductive tract diseases, and normal reproductive history of 1-2 fetuses were selected as donors [ 3 ]. The donor and recipient sheep must be selected and kept in place 3~4 months before the operation, and the epidemic disease vaccination, necessary epidemic disease monitoring, and insect repellent shall be done well, and the feeding shall be strengthened from 2 months before the operation.…”

Section: Introductionmentioning

confidence: 99%

Application of Ultrasonic Intelligent Imaging in L-Selectin Regulating Embryo Implantation in Mongolian Sheep Endometrium

et al. 2022

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In order to explore the practical application of ultrasonic imaging in the pregnancy stage of Mongolian sheep and the role of L-selectin in the embryo implantation process of Mongolian sheep, this paper systematically observed the early embryonic development by B-mode ultrasonic imaging wave diagnostic instrument with 5 MHz rectal probe and detected the expression of sLex and L-selectin in embryonic cells (jar cells) and endometrial cells (RL95-2 cells) by immunoassay to show the role of L-selectin in embryonic adhesion. The results were as follows: the correct rate of fetal sex determination by ultrasound imaging increased with the increase of pregnancy days and reached 93% at 84 days; sLex/L-selectin on the surface of Jar/RL95-2 cells is involved in the adhesion between embryo and endometrium; and when the concentration of L-selectin was 30 μg/ml, the implantation success rate of fertilized eggs and embryos was the highest, reaching 95%. It is proved that ultrasonic intelligent imaging exploration can summarize the imaging characteristics of the early development law of sheep fetus, which provides a basis for B-ultrasound to monitor fetal growth and predict fetal age. While discussing the molecular mechanism of implantation, it provides a new idea and means for the clinical intervention of contraception and pregnancy assistance with oligosaccharide as the target.

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Section: Introductionmentioning

confidence: 99%

Application of Ultrasonic Intelligent Imaging in L-Selectin Regulating Embryo Implantation in Mongolian Sheep Endometrium

et al. 2022

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“…It was observed that, depending on the percentage of each liquid inside the ABS sphere, a subwavelength resolution could be achieved 19 . Recently, Leão-Neto et al 20 have reported numerically and experimentally that a subwavelength focus could be obtained by using a Rexolite sphere with another smaller carbon steel sphere inside, i.e. a core-shell shaped lens.…”

Section: Introductionmentioning

confidence: 99%

Cylindrical 3D printed configurable ultrasonic lens for subwavelength focusing enhancement

Castiñeira-Ibáñez

Tarrazó-Serrano

Rubio

et al. 2020

Sci Rep

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In this study, we report the characteristics of acoustic jets obtained through a mesoscale (radius less than 5 wavelengths) ABS cylinder made with a 3D printer. We have analyzed the influence of cylinder size on the characteristic parameters of an acoustic jet, such as maximum acoustic intensity at focus, Full Width at Half Maximum and length of Acoustic Jet. FWHM below 0.5 wavelength in AJ was experimentally obtained. It has been observed that there are two operating regimes depending on the cylinder radius: the resonant and the non-resonant. In the resonant regime, the excitation of Whispering Gallery Modes results in optimal parameter values of the acoustic jet. However, as it is a resonant regime, any minimal variation in cylinder size, working frequency or refractive index would make resonance disappear. In non-resonant mode, a phononic crystal has been embedded inside the cylinder and the characteristic parameters of the acoustic jet have been studied. These have been observed to improve. Finally, we have shown that curved acoustic jets can be obtained with the ABS cylinder with a phononic crystal embedded inside.

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“…2 C) [25] . Recently, in the research area of super-resolution ultrasonic imaging, the dimension of the acoustic focus has been further refined into the range of subwavelength (0.50–0.73λ) by using phononic metamaterial lens or core–shell shaped lens [26] , [27] . Considering the complexity of trans -skull ultrasound focusing, technical challenges still remain to precisely induce intracranial cavitation with a spatial resolution of subwavelength.…”

Section: Advanced Basics Of Ultrasound-driven Cavitationmentioning

confidence: 99%

Barrier-breaking effects of ultrasonic cavitation for drug delivery and biomarker release

Wei

Shen

Chen

et al. 2023

Ultrasonics Sonochemistry

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Subwavelength Focusing Beam and Superresolution Ultrasonic Imaging Using a Core-Shell Lens

Cited by 18 publications

References 29 publications

Application of Ultrasonic Intelligent Imaging in L-Selectin Regulating Embryo Implantation in Mongolian Sheep Endometrium

Application of Ultrasonic Intelligent Imaging in L-Selectin Regulating Embryo Implantation in Mongolian Sheep Endometrium

Cylindrical 3D printed configurable ultrasonic lens for subwavelength focusing enhancement

Barrier-breaking effects of ultrasonic cavitation for drug delivery and biomarker release

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