{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T02:18:10Z","timestamp":1760235490423,"version":"build-2065373602"},"reference-count":26,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2021,8,26]],"date-time":"2021-08-26T00:00:00Z","timestamp":1629936000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100014188","name":"Ministry of Science and ICT, South Korea","doi-asserted-by":"publisher","award":["IITP-2020-20170-01630"],"award-info":[{"award-number":["IITP-2020-20170-01630"]}],"id":[{"id":"10.13039\/501100014188","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Gachon Unversity","award":["2019-0369"],"award-info":[{"award-number":["2019-0369"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>The goal of oncological surgery is to completely remove the tumor. Tumors are often difficult to observe with the naked eye because of the presence of numerous blood vessels and the fact the colors of the tumor and blood vessels are similar. Therefore, a fluorescent contrast medium using a surgical microscope is used to observe the removal status of the tumor. To observe the tumor removal status using a fluorescent contrast agent, fluorescence is expressed in the tumor by irradiating with an external light source, and the expressed tumor can be confirmed through a surgical microscope. However, not only fluorescence-expressed tumors are observed under a surgical microscope, but images from an external light source are also mixed and observed. Therefore, since the surgical microscope is connected to a filter, the quality of the diagnostic image is not uniform, and it is difficult to achieve a clear observation. As a result, an asymmetric image quality phenomenon occurs in the diagnostic images. In this paper, a filter with high clarity that provides a symmetrical observation of diagnostic images is developed and manufactured.<\/jats:p>","DOI":"10.3390\/sym13091571","type":"journal-article","created":{"date-parts":[[2021,8,31]],"date-time":"2021-08-31T22:58:15Z","timestamp":1630450695000},"page":"1571","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Design of a Long-Pass Filter with Effects on Fluorescence Image Observation for Surgical Fluorescence Microscope Applications"],"prefix":"10.3390","volume":"13","author":[{"given":"Jinkyu","family":"Kim","sequence":"first","affiliation":[{"name":"Medical Devices R&D Center, Gachon University Gil Medical Center, 21, 774 beon-gil, Namdong-daero, Namdong-gu, Incheon 21565, Korea"},{"name":"Department of Biomedical Engineering, College of Medicine, Gachon University, #701, 38-13, 3 Dokjom-ro, Namdong-gu, Incheon 21565, Korea"},{"name":"Department of Chemistry and Biochemistry, College of Life Science, University of California, Los Angeles (UCLA), 405 Hilgard Ave., Los Angeles, CA 90095, USA"},{"name":"Department of Biomedical Engineering, College of Health Science, Gachon University, 191 Hambangmoe-ro, Namdong-gu, Incheon 21936, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kicheol","family":"Yoon","sequence":"additional","affiliation":[{"name":"Medical Devices R&D Center, Gachon University Gil Medical Center, 21, 774 beon-gil, Namdong-daero, Namdong-gu, Incheon 21565, Korea"},{"name":"Department of Biomedical Engineering, College of Medicine, Gachon University, #701, 38-13, 3 Dokjom-ro, Namdong-gu, Incheon 21565, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9714-6038","authenticated-orcid":false,"given":"Kwanggi","family":"Kim","sequence":"additional","affiliation":[{"name":"Medical Devices R&D Center, Gachon University Gil Medical Center, 21, 774 beon-gil, Namdong-daero, Namdong-gu, Incheon 21565, Korea"},{"name":"Department of Biomedical Engineering, College of Medicine, Gachon University, #701, 38-13, 3 Dokjom-ro, Namdong-gu, Incheon 21565, Korea"},{"name":"Department of Biomedical Engineering, College of Health Science, Gachon University, 191 Hambangmoe-ro, Namdong-gu, Incheon 21936, Korea"},{"name":"Department of Health Sciences and Technology, Gachon Advanced Institute for Health Sciences and Technology (GAIHST), Gachon University, 38-13, 3 Dokjom-ro, Namdong-gu, Incheon 21565, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,8,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"501","DOI":"10.1007\/s00464-007-9495-2","article-title":"The usefulness of preoperative colonoscopic tattooing using a saline test injection method with prepackaged sterile India ink for localization in laparoscopic colorectal surgery","volume":"22","author":"Park","year":"2007","journal-title":"Surg. 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