In-vivo assessing the age-related stiffness of crystalline lens in rabbits by acoustic radiation force based ultrasound elastography

Wang, Qingmin; Lv, Zhen; Gao, Xuehua; Zhang, Pengpeng; Lin, Haoming; Guo, Yanrong; Chen, Xin; Wang, Tianfu; Chen, Siping; Zhang, Xinyu

doi:10.1109/ultsym.2017.8092771

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…To verify the effectiveness of the optimized algorithm in the field of medical ultrasound imaging, two sets of CMUT imaging experiments are carried out, respectively, the imaging of the embedded mass in the breast model and the imaging of the forearm blood vessel. These studies are conducted on the Verasonics (Deng et al, 2017;Kaczkowski and Daigle, 2011;Wang et al, 2017) ultrasound research platform.…”

Section: Imaging Experiments Verificationmentioning

confidence: 99%

Research on optimization sparse method for capacitive micromachined ultrasonic transducer array: heuristic algorithm

Zhang

Shao

et al. 2021

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Purpose Because of the small size and high integration of capacitive micromachined ultrasonic transducer (CMUT) component, it can be made into large-scale array, but this lead to high hardware complexity, so the purpose of this paper is to use less elements to achieve better imaging results. In this research, an optimized sparse array is studied, which can suppress the side lobe and reduce the imaging artifacts compared with the equispaced sparse array with the same number of elements. Design/methodology/approach Genetic algorithm is used to sparse the CMUT linear array, and Kaiser window apodization is added to reduce imaging artifacts, the beam pattern and peak-to-side lobe ratio are calculated, point targets imaging comparisons are performed. Furthermore, a 256-elements CMUT linear array is used to carry out the imaging experiment of embedded mass and forearm blood vessel, and the imaging results are compared quantitatively. Findings Through the imaging comparison of embedded mass and forearm blood vessel, the feasibility of optimized sparse array of CMUT is verified, and the purpose of reducing the hardware complexity is achieved. Originality/value This research provides a basis for the large-scale CMUT array to reduce the hardware complexity and the amount of calculation. At present, the CMUT array has been used in medical ultrasound imaging and has huge market potential.

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Section: Imaging Experiments Verificationmentioning

confidence: 99%

Research on optimization sparse method for capacitive micromachined ultrasonic transducer array: heuristic algorithm

Zhang

Shao

et al. 2021

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“…The experimental platform is shown in Figure 11. The experiment is carried out on the Verasonics ultrasound platform [33][34][35]; four nails are fixed on the foam pad, using the CMUT linear array to image these four nails underwater. Each nail's number is shown in the figure; the heights of nail 1, nail 2, nail 3, nail 4 are 15.00 mm, 20.00 mm, 19.00 mm, 16.00 mm, respectively.…”

Section: Experimental Verificationmentioning

confidence: 99%

A Study on Capacitive Micromachined Ultrasonic Transducer Periodic Sparse Array

Zhang

Shao

et al. 2021

Micromachines

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Capacitive micromachined ultrasonic transducer (CMUT) is an ultrasonic transducer based on the microelectromechanical system (MEMS). CMUT elements are easily made into a high-density array, which will increase the hardware complexity. In order to reduce the number of active channels, this paper studies the grating lobes generated by CMUT periodic sparse array (PSA) pairs. Through the design of active element positions in the transmitting and receiving processes, the simulation results of effective aperture and beam patterns show that the common grating lobes (CGLs) generated by the transmit and receive array are eliminated. On the basis of point targets imaging, a CMUT linear array with 256 elements is used to carry out the PSA pairs experiment. Under the same sparse factor (SF), the optimal sparse array configuration can be selected to reduce the imaging artifacts. This conclusion is of great significance for the application of CMUT in three-dimensional ultrasound imaging.

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In-vivo assessing the age-related stiffness of crystalline lens in rabbits by acoustic radiation force based ultrasound elastography

Cited by 2 publications

References 13 publications

Research on optimization sparse method for capacitive micromachined ultrasonic transducer array: heuristic algorithm

Research on optimization sparse method for capacitive micromachined ultrasonic transducer array: heuristic algorithm

A Study on Capacitive Micromachined Ultrasonic Transducer Periodic Sparse Array

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