Research Topics
| Shuichi MakitaSummaryAffiliation: University of Tsukuba Country: Japan Publications
| Collaborators
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Detail Information
Publications
Polarization contrast imaging of biological tissues by polarization-sensitive Fourier-domain optical coherence tomographyShuichi Makita
Institute of Applied Physics, University of Tsukuba, 1 1 1 Tennodai, Tsukuba, Ibaraki 305 8573, Japan
Appl Opt 45:1142-7. 2006..Local polarization properties are obtained by longitudinal differentiation of Jones matrix components. The layered structure of the bovine tendon and birefringence are revealed...
Generalized Jones matrix optical coherence tomography: performance and local birefringence imagingShuichi Makita
Computational Optics Group in University of Tsukuba, Tsukuba, Ibaraki, Japan
Opt Express 18:854-76. 2010..The theoretical analysis suggests that the measurements with two orthogonal input polarization states have the lowest retardation error. Local birefringence imaging is applied to the human anterior eye chamber and skin in vivo...- Full-range, high-speed, high-resolution 1 microm spectral-domain optical coherence tomography using BM-scan for volumetric imaging of the human posterior eyeShuichi Makita
Computational Optics Group in the University of Tsukuba, 1 1 1 Tennodai, Tsukuba, Ibaraki, 3058573, Japan
Opt Express 16:8406-20. 2008..The three-dimensional structure of the in vivo human optic nerve head with a very deep cupping is successfully visualized... - Quantitative retinal-blood flow measurement with three-dimensional vessel geometry determination using ultrahigh-resolution Doppler optical coherence angiographyShuichi Makita
Computational Optics Group, University of Tsukuba, 1 1 1 Tenodai, Tsukuba, Ibaraki 305 8573, Japan
Opt Lett 33:836-8. 2008..The volumetric flow rate is obtained with the position and the region of the vessel lumen. The volumetric blood flow rate of retinal arteries before and after a bifurcation is verified in a healthy human eye... - Three-dimensional retinal and choroidal capillary imaging by power Doppler optical coherence angiography with adaptive opticsKazuhiro Kurokawa
Computational Optics Group, University of Tsukuba, Tsukuba, Japan
Opt Express 20:22796-812. 2012..In conclusion, AO-OCA enables three-dimensional capillary imaging, and is especially useful for the detection of the choriocapillaris and choroidal capillary network... - High-penetration swept source Doppler optical coherence angiography by fully numerical phase stabilizationYoung Joo Hong
Computational Optics Group, University of Tsukuba, Tsukuba, Ibaraki, Japan
Opt Express 20:2740-60. 2012..En face projection image of squared power of Doppler shift is compared to ICGA, and the utility of our method is verified... - Tissue discrimination in anterior eye using three optical parameters obtained by polarization sensitive optical coherence tomographyArata Miyazawa
Computational Optics Group in University of Tsukuba, Ibaraki, Japan
Opt Express 17:17426-40. 2009..A marker was injected into sub-Tenon's space and the tissues that were anterior to the marker and posterior to the marker were successfully segmented by our algorithm... - Full-range polarization-sensitive swept-source optical coherence tomography by simultaneous transversal and spectral modulationMasahiro Yamanari
Computational Optics Group in the University of Tsukuba, Tsukuba, Ibaraki, Japan
Opt Express 18:13964-80. 2010..4 microm in tissue. Full-range polarization-sensitive retinal images showed characteristic birefringence of fibrous tissues such as retinal nerve fiber, sclera, and lamina cribrosa... - Comprehensive in vivo micro-vascular imaging of the human eye by dual-beam-scan Doppler optical coherence angiographyShuichi Makita
Computational Optics Group in University of Tsukuba, Tsukuba, Ibaraki, Japan
Opt Express 19:1271-83. 2011..The demonstrated results show that this technique may be used for comprehensive ophthalmic angiography to evaluate the vasculature of the posterior human eye and to diagnose variety of vascular diseases... 
Optical rheology of porcine sclera by birefringence imagingMasahiro Yamanari
Computational Optics Group in the University of Tsukuba, Tsukuba, Japan
PLoS ONE 7:e44026. 2012..To investigate a relationship between birefringence and elasticity of porcine sclera ex vivo using polarization-sensitive optical coherence tomography (PS-OCT)...- Dual-beam-scan Doppler optical coherence angiography for birefringence-artifact-free vasculature imagingShuichi Makita
Computational Optics Group in the University of Tsukuba, 1 1 1 Tennodai, Tsukuba, Ibaraki 305 8573, Japan
Opt Express 20:2681-92. 2012..High-speed and high-sensitivity micro-vasculature imaging involving birefringent tissues is available with polarization multiplexing DB-OCA... - Automated retinal shadow compensation of optical coherence tomography imagesTapio Fabritius
University of Tsukuba, Computational Optics Group, 1 1 1 Tennodai, Tsukuba, Ibaraki 305 8573 Japan
J Biomed Opt 14:010503. 2009..Removal of retinal shadows distinctly improved the readability of choroidal images... - Simultaneous B-M-mode scanning method for real-time full-range Fourier domain optical coherence tomographyYoshiaki Yasuno
Institute of Applied Physics, University of Tsukuba, Tennodai 1 1 1, Ibaraki, Tsukuba 305 8573, Japan
Appl Opt 45:1861-5. 2006..A simple but slow version of the FD-OCT visualizes the cross section of a plastic plate. A modified fast version of this FD-OCT investigates a sweat duct in a finger pad in vivo and visualizes it with an acquisition time of 27 ms... - Visualization of sub-retinal pigment epithelium morphologies of exudative macular diseases by high-penetration optical coherence tomographyYoshiaki Yasuno
Computational Optics Group, Institute of Applied Physics, University of Tsukuba, Tennodai 1 1 1, Tsukuba, Ibaraki, 305 8573, Japan
Invest Ophthalmol Vis Sci 50:405-13. 2009..To evaluate the clinical significance of the newly developed long-wavelength probe optical coherence tomography (LP-OCT) for the diagnosis of exudative macular diseases... - Visibility of trabecular meshwork by standard and polarization-sensitive optical coherence tomographyYoshiaki Yasuno
University of Tsukuba, Computational Optics Group and Computational Optics and Ophthalmology Group, Ibaraki, Japan
J Biomed Opt 15:061705. 2010..A subsequent Wilcoxon signed-rank test reveals significantly improved visibility. PS-CAS-OCT may become a useful tool for screening angle-closure glaucoma... - Polarization-sensitive swept-source optical coherence tomography with continuous source polarization modulationMasahiro Yamanari
Computational Optics Group in the University of Tsukuba, Tsukuba, Ibaraki, Japan
Opt Express 16:5892-906. 2008..The phase retardation image shows an additional contrast in the fibrous tissue such as the collagen fiber in the trabecular meshwork and sclera... - Visualization of phase retardation of deep posterior eye by polarization-sensitive swept-source optical coherence tomography with 1-microm probeMasahiro Yamanari
Computational Optics Group in the University of Tsukuba, Tsukuba, Ibaraki, Japan
Opt Express 17:12385-96. 2009..In addition, unlike conventional OCT, our PS-SS-OCT showed polarization-insensitive intensity images, in which an artifact created by the birefringence of sclera has been successfully eliminated... - Three-dimensional visualization of ocular vascular pathology by optical coherence angiography in vivoMasahiro Miura
Department of Ophthalmology, Tokyo Medical University, Ibaraki Medical Center, Ibaraki, Japan
Invest Ophthalmol Vis Sci 52:2689-95. 2011..To evaluate the vascular architecture of polypoidal choroidal vasculopathy (PCV) using Doppler OCA... - Variable velocity range imaging of the choroid with dual-beam optical coherence angiographyFranck Jaillon
Computational Optics Group, University of Tsukuba, 1 1 1 Tennodai, Tsukuba, Ibaraki 305 8573, Japan
Opt Express 20:385-96. 2012..Combining these maps yields a semi-quantitative visualization of axial velocity of the choroidal circulation. The proposed technique may be useful for identifying choroidal abnormalities that occur in pathological conditions of the eye... - Choroidal thickness measurement in healthy Japanese subjects by three-dimensional high-penetration optical coherence tomographyTetsuya Agawa
Department of Ophthalmology, Tokyo Medical University, Ibaraki Medical Center, 3 20 1 Chuo, Ami, Inashiki, Ibaraki, 3000395, Japan
Graefes Arch Clin Exp Ophthalmol 249:1485-92. 2011..We performed retinal and choroidal thickness mapping by three-dimensional high-penetration optical coherence tomography (OCT) and evaluated the choroidal thickness distribution throughout the macula in healthy eyes... - Three-dimensional line-field Fourier domain optical coherence tomography for in vivo dermatological investigationYoshiaki Yasuno
University of Tsukuba, Institute of Applied Physics, Tennodai 1 1 1, Tsukuba, Ibaraki 305 8573, Japan
J Biomed Opt 11:014014. 2006..1 x 1.4 x 1.3 mm. The acquisition time for a single cross section is 1 ms and that for a single volume is 10 s. The system sensitivity is 75.6 dB at a probe beam power of 1.1 mW... - Simultaneous high-resolution retinal imaging and high-penetration choroidal imaging by one-micrometer adaptive optics optical coherence tomographyKazuhiro Kurokawa
Computational Optics Group in the University of Tsukuba, Tsukuba, Ibaraki, Japan
Opt Express 18:8515-27. 2010..Simultaneous high-resolution and high-penetration choroidal imaging may be useful for microstructural investigation of photoreceptors and glaucomatous nerve-fiber abnormalities... - Three-dimensional anterior segment optical coherence tomography of filtering blebs after trabeculectomyMasahiro Miura
Department of Ophthalmology, Tokyo Medical University, Kasumigaura Hospital, Ibaraki, Japan
J Glaucoma 17:193-6. 2008..To evaluate trabeculectomy blebs by using 3-dimensional anterior segment optical coherence tomography (OCT)... - Phase retardation measurement of retinal nerve fiber layer by polarization-sensitive spectral-domain optical coherence tomography and scanning laser polarimetryMasahiro Yamanari
University of Tsukuba, Computational Optics Group, 1 1 1 Tennodai, Tsukuba, Ibaraki 305 8573, Japan
J Biomed Opt 13:014013. 2008..PS-SD-OCT can measure the cumulative phase retardation of RNFL as well as SLP, which will allow the evaluation of RNFL for glaucomatous eyes... - Adaptive optics retinal scanner for one-micrometer light sourceKazuhiro Kurokawa
Computational Optics Group in the University of Tsukuba, Tsukbua, Ibaraki, Japan
Opt Express 18:1406-18. 2010..With AO correction, we found that the residual RMS wavefront error of ocular aberration was less than 0.1 microm. We also found that the AO retinal scanner in the AO-SLO mode enabled enhanced observation of photoreceptor mosaic... - Parabolic BM-scan technique for full range Doppler spectral domain optical coherence tomographyFranck Jaillon
Computational Optics Group in the University of Tsukuba, Tsukuba, Ibaraki, Japan
Opt Express 18:1358-72. 2010..Consequently, applying the proposed technique in retinal blood flow measurements may be useful for ophthalmologic diagnosis... - Extended depth of focus adaptive optics spectral domain optical coherence tomographyKazuhiro Sasaki
Computational Optics Group in the University of Tsukuba, Tsukuba, Japan
Biomed Opt Express 3:2353-70. 2012..The results indicate that the focal range is extended by applying SA, and the direction of extension can be controlled by the sign of applied SA. Finally, we demonstrated in vivo human retinal imaging by altering the applied SA... - Monte-Carlo-based phase retardation estimator for polarization sensitive optical coherence tomographyLian Duan
Computational Optics Group at the University of Tsukuba, Tsukuba, Ibaraki, Japan
Opt Express 19:16330-45. 2011..This method is validated both by numerical simulations and experiments. The application of this method to in vitro and in vivo biological samples is also demonstrated... - Imaging polarimetry in age-related macular degenerationMasahiro Miura
Computational Optics and Ophthalmology Group, Tokyo Medical University, Tokyo, Japan
Invest Ophthalmol Vis Sci 49:2661-7. 2008..To compare the information from two techniques--scanning laser polarimetry (GDx) and polarization-sensitive spectral-domain optical coherence tomography (OCT)--and investigate how they complement each other... - Three-dimensional imaging of macular holes with high-speed optical coherence tomographyMasanori Hangai
Department of Ophthalmology and Visual Science, Kyoto University Graduate School of Medicine, Kyoto, Japan
Ophthalmology 114:763-73. 2007..To demonstrate the advantages of 3-dimensional imaging of macular hole pathology using new-generation high-speed optical coherence tomography (OCT)... - Three-dimensional imaging of the foveal photoreceptor layer in central serous chorioretinopathy using high-speed optical coherence tomographyYumiko Ojima
Department of Ophthalmology and Visual Science, Kyoto University Graduate School of Medicine, Kyoto, Japan
Ophthalmology 114:2197-207. 2007..To describe the 3-dimensional (3-D) imaging of the pathologic changes in the foveal photoreceptor layer in eyes with central serous chorioretinopathy (CSC) using high-speed optical coherence tomography (OCT)... - [Improved visualization of foveal pathologies using fourier-domain optical coherence tomography]Masanori Hangai
Department of Ophthalmology and Visual Science, Kyoto University Graduate School of Medicine, Japan
Nihon Ganka Gakkai Zasshi 111:509-17. 2007..To demonstrate the improved visualization of pathological foveal structures by a prototytpe Fourier-domain optical coherence tomography instrument (FD-OCT)...