{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T17:52:15Z","timestamp":1777571535515,"version":"3.51.4"},"reference-count":26,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2018,10,3]],"date-time":"2018-10-03T00:00:00Z","timestamp":1538524800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea","doi-asserted-by":"publisher","award":["2017R1C1B1003606, NRF-2017M2A2A4A01071240"],"award-info":[{"award-number":["2017R1C1B1003606, NRF-2017M2A2A4A01071240"]}],"id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Korea Health Technology R&amp;D Project","award":["HI17C0654"],"award-info":[{"award-number":["HI17C0654"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>A new multiwavelength visible-range-supported opto\u2013ultrasound instrument using a light-emitting diode and ultrasound transducer was developed in order to produce multiwavelength visible light with minimized color aberration errors, and detect ultrasound signals emitted from the target. In the instrument, the developed optical systems can provide multiwavelength optical transmission with low optical aberration within 10-cm ranges that are reasonably flat in the modulation transfer function at spatial frequencies of 20 and 40 lp\/mm, except at the end of the diagonal edge of the samples. To assess the instrument capability, we performed pulse\u2013echo responses with Thunnus obesus eye samples. Focused red, green, blue and white light rays from an integrated red, green and blue LED source were produced, and echo signal amplitudes of 33.53, 34.92, 38.74 and 82.54 mV, respectively, were detected from the Thunnus obesus eye samples by a 10-MHz focused ultrasound transducer. The center frequencies of the echo signal when producing red, green, blue and white LED light in the instrument were 9.02, 9.05, 9.21 and 8.81 MHz, respectively. From these tests, we verify that this instrument can combine red, green and blue LED light to cover different wavelengths in the visible-light range and detect reasonable echo amplitudes from the samples.<\/jats:p>","DOI":"10.3390\/s18103324","type":"journal-article","created":{"date-parts":[[2018,10,4]],"date-time":"2018-10-04T12:29:57Z","timestamp":1538656197000},"page":"3324","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":35,"title":["Development of a Multiwavelength Visible-Range-Supported Opto\u2013Ultrasound Instrument Using a Light-Emitting Diode and Ultrasound Transducer"],"prefix":"10.3390","volume":"18","author":[{"given":"Hojong","family":"Choi","sequence":"first","affiliation":[{"name":"Department of Medical IT Convergence Engineering, Kumoh National Institute of Technology, Gumi 39253, Korea"}]},{"given":"Jung-Yeol","family":"Yeom","sequence":"additional","affiliation":[{"name":"School of Biomedical Engineering, Korea University, Seoul 02841, Korea"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6318-0684","authenticated-orcid":false,"given":"Jae-Myung","family":"Ryu","sequence":"additional","affiliation":[{"name":"Department of Optical Engineering, Kumoh National Institute of Technology, Gumi 39253, Korea"}]}],"member":"1968","published-online":{"date-parts":[[2018,10,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"87","DOI":"10.1016\/j.pmatsci.2014.06.001","article-title":"Piezoelectric single crystal ultrasonic transducers for biomedical applications","volume":"66","author":"Zhou","year":"2014","journal-title":"Prog. 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