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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1109/TUFFC.2023.3321871
|2 doi
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|a pubmed24n1588.xml
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|a (NLM)37792653
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|e rakwb
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|a eng
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|a Lu, Jian-Yu
|e verfasserin
|4 aut
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|a Ultrasound Concave 2-D Ring Array for Retinal Stimulation
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 02.11.2023
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|a Date Revised 02.11.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a An ultrasound concave 2-D ring array transducer was designed for applications in visual stimulation of the retina with a long-term goal to restore vision in individuals with intact neurons but suffering blindness due to retinopathies. The array was synthesized and has a frequency of 20 MHz (0.075-mm wavelengths in water), 18-mm focal length (the curvature of the concave array), 1004 elements (with a pitch of 4.0 wavelengths), and inner and outer diameters of 9 and 14 mm, respectively. Wave patterns produced with the array at the focal distance were simulated. Results show that the wave patterns obtained can achieve a full-width-at-half-maximum (FWHM) resolution of 0.147 mm that is very close to the FWHM diffraction limit (0.136 mm). In addition, a scaled experiment at a lower frequency of 2.5 MHz was performed. The result is very close to those obtained with the simulations
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|a Journal Article
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|a Research Support, N.I.H., Extramural
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|a Research Support, Non-U.S. Gov't
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| 700 |
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|a Lu, Gengxi
|e verfasserin
|4 aut
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|a Thomas, Biju B
|e verfasserin
|4 aut
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|a Humayun, Mark S
|e verfasserin
|4 aut
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| 700 |
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|a Zhou, Qifa
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t IEEE transactions on ultrasonics, ferroelectrics, and frequency control
|d 1986
|g 70(2023), 11 vom: 01. Nov., Seite 1527-1535
|w (DE-627)NLM098181017
|x 1525-8955
|7 nnns
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| 773 |
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|g volume:70
|g year:2023
|g number:11
|g day:01
|g month:11
|g pages:1527-1535
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|u http://dx.doi.org/10.1109/TUFFC.2023.3321871
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