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pubmed-article:18545554pubmed:dateCreated2008-6-11lld:pubmed
pubmed-article:18545554pubmed:abstractTextAn alternative optical coherence tomography (OCT) to clinical ophthalmic 830 nm spectral-domain OCTs (SD-OCT) is demonstrated. An axial resolution of 7.4 microm, ranging depth of 4.2 mm in tissue, sensitivity of 98.5 dB, and detection speed of 38,300 axial scans/s have been achieved. These are comparable or superior to those of recently commercially available ophthalmic 830 nm SD-OCTs in clinics. In addition, fast volumetric imaging for the in vivo human posterior eye with high-contrast of the choroid is achieved. A broadband 1.04 microm light source enables the high-contrast and high resolution imaging of the retina and choroid. The ranging depth is extended by applying a full-range imaging method with an electro-optic modulator (BM-scan method). A prototype high-speed InGaAs line scan camera with 1024 pixels is used. A newly reported sensitivity improvement property of the BM-scan method demonstrates a sensitivity enhancement of 5.1 dB. We also introduce a newly developed resampling calibration method of spectrum that is independent of the intrinsic dispersion mismatch of the interferometer. The three-dimensional structure of the in vivo human optic nerve head with a very deep cupping is successfully visualized.lld:pubmed
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pubmed-article:18545554pubmed:authorpubmed-author:MakitaShuichi...lld:pubmed
pubmed-article:18545554pubmed:authorpubmed-author:YasunoYoshiak...lld:pubmed
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pubmed-article:18545554pubmed:year2008lld:pubmed
pubmed-article:18545554pubmed:articleTitleFull-range, high-speed, high-resolution 1 microm spectral-domain optical coherence tomography using BM-scan for volumetric imaging of the human posterior eye.lld:pubmed
pubmed-article:18545554pubmed:affiliationComputational Optics Group in the University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 3058573, Japan. makita@optlab2.bk.tsukuba.ac.jplld:pubmed
pubmed-article:18545554pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:18545554pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed
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