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Xie Y, Harsan LA, Bienert T, Kirch RD, von Elverfeldt D, Hofmann UG. Qualitative and quantitative evaluation of in vivo SD-OCT measurement of rat brain. BIOMEDICAL OPTICS EXPRESS 2017; 8:593-607. [PMID: 28270970 PMCID: PMC5330575 DOI: 10.1364/boe.8.000593] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 12/05/2016] [Accepted: 12/07/2016] [Indexed: 06/01/2023]
Abstract
OCT has been demonstrated as an efficient imaging modality in various biomedical and clinical applications. However, there is a missing link with respect to the source of contrast between OCT and other modern imaging modalities, no quantitative comparison has been demonstrated between them, yet. We evaluated, to our knowledge, for the first time in vivo OCT measurement of rat brain with our previously proposed forward imaging method by both qualitatively and quantitatively correlating OCT with the corresponding T1-weighted and T2-weighted magnetic resonance images, fiber density map (FDM), and two types of histology staining (cresyl violet and acetylcholinesterase AchE), respectively. Brain anatomical structures were identified and compared across OCT, MRI and histology imaging modalities. Noticeable resemblances corresponding to certain anatomical structures were found between OCT and other image profiles. Correlation was quantitatively assessed by estimating correlation coefficient (R) and mutual information (MI). Results show that the 1-D OCT measurements in regards to the intensity profile and estimated attenuation factor, do not have profound linear correlation with the other image modalities suggested from correlation coefficient estimation. However, findings in mutual information analysis demonstrate that there are markedly high MI values in OCT-MRI signals.
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Affiliation(s)
- Yijing Xie
- Section of Neuroelectronic Systems, Department of General Neurosurgery, Medical Center University of Freiburg, Engesserstraβe 4, 79108 Freiburg,
Germany
- Translational Imaging Group, Centre for Medical Image Computing, Department of Medical Physics and Biomedical Engineering, University College London, WC1E 6BT London,
UK
| | - Laura-Adela Harsan
- Department of Diagnostic Radiology, Medical Center University of Freiburg, Hugstetter Straβe 55, 79106 Freiburg,
Germany
- Laboratory of Engineering, Informatics and Imaging (ICube), Integrative Multimodal Imaging in Healthcare (IMIS), UMR 7357, University of Strasbourg, 4 Rue Kirschleger, 67000 Strasbourg,
France
- Department of Biophysics and Nuclear Medicine, Hautepierre Hospital, University Hospitals of Strasbourg, 1, Avenue Molière, 67098 Strasbourg Cedex,
France
| | - Thomas Bienert
- Department of Diagnostic Radiology, Medical Center University of Freiburg, Hugstetter Straβe 55, 79106 Freiburg,
Germany
| | - Robert D. Kirch
- Section of Neuroelectronic Systems, Department of General Neurosurgery, Medical Center University of Freiburg, Engesserstraβe 4, 79108 Freiburg,
Germany
| | - Dominik von Elverfeldt
- Department of Diagnostic Radiology, Medical Center University of Freiburg, Hugstetter Straβe 55, 79106 Freiburg,
Germany
| | - Ulrich G. Hofmann
- Section of Neuroelectronic Systems, Department of General Neurosurgery, Medical Center University of Freiburg, Engesserstraβe 4, 79108 Freiburg,
Germany
- Freiburg Institute for Advanced Studies (FRIAS), University of Freiburg and University of Strasbourg Institute for Advanced Study (USIAS), Strasbourg,
France
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Shimada Y, Sadr A, Sumi Y, Tagami J. Application of Optical Coherence Tomography (OCT) for Diagnosis of Caries, Cracks, and Defects of Restorations. ACTA ACUST UNITED AC 2015; 2:73-80. [PMID: 26317064 PMCID: PMC4544493 DOI: 10.1007/s40496-015-0045-z] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Optical coherence tomography (OCT) is a noninvasive technique providing cross-sectional images of a tooth structure. This review describes the use of OCT for detecting dental caries, tooth fractures, and interfacial gaps in intraoral restorations. OCT can be a reliable and an accurate method and a safer alternative to X-ray radiography.
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Affiliation(s)
- Yasushi Shimada
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Alireza Sadr
- International Exchange Center, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yasunori Sumi
- Division of Oral and Dental Surgery, Department of Advanced Medicine, National Hospital for Geriatric Medicine, National Center for Geriatrics and Gerontology, Obu, Aichi Japan
| | - Junji Tagami
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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Kieu KQ, Klein J, Evans A, Barton JK, Peyghambarian N. Ultrahigh resolution all-reflective optical coherence tomography system with a compact fiber-based supercontinuum source. JOURNAL OF BIOMEDICAL OPTICS 2011; 16:106004. [PMID: 22029351 DOI: 10.1117/1.3633340] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
We report the construction and characterization of an all-reflective optical coherence tomography (OCT) system using a newly developed compact fiber-based broadband supercontinuum source. The use of only reflective optical components has enabled us to avoid chromatic dispersion effects and to obtain ultrahigh resolution OCT images of biological samples. We achieved an axial resolution of 2 μm in air with 87 dB dynamic range at a center wavelength around 1300 nm.
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Affiliation(s)
- Khanh Quoc Kieu
- University of Arizona, College of Optical Sciences, Optical Sciences Meinel Building, 1630 E. University Boulevard, Tucson, Arizona 85721, USA.
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