1. Steven L. Jacques

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    1. Mentioned In 43 Articles

    2. Semi-automated registration and segmentation for gingival tissue volume measurement on 3D OCT images

      Semi-automated registration and segmentation for gingival tissue volume measurement on 3D OCT images
      The change in gingival tissue volume may be used to indicate changes in gingival inflammation, which may be useful for the clinical assessment of gingival health. Properly quantifying gingival tissue volume requires a robust technique for accurate registration and segmentation of longitudinally captured 3-dimensional (3D) images. In this paper, a semi-automated registration and segmentation method for micrometer resolution measurement of gingival-tissue volume is proposed for 3D optical coherence tomography (OCT ...
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    3. BIGSS 2020 – Virtual Summer School August 25th – 29th 2020

      BIGSS 2020 – Virtual Summer School  August 25th – 29th 2020
      BIGSS 2020 summer school will go virtual this year . The deadline for abstract submission is Wednesday 18 th of July 2020 and authors will be notified by the 28 th of July 2020 . BIGSS 2020 will include Five day lectures by renowned researches (Details of topics given below) Highly interactive online poster sessions Live QA sessions within the web conferencing platform The registration fees have been considerably reduced to enable ...
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    4. Biophotonics and Imaging Graduate Summer School to be held on August 2020 at National University of Ireland, Galway

      Biophotonics and  Imaging  Graduate  Summer  School to be held on August 2020 at National University of Ireland, Galway
      Dates: August 25th - 29th 2020 This is our eight Biophotonics and Imaging Graduate Summer School. It is an important opportunity for graduate students in 2020 to access the kind of close contact with leading professors that only this kind of environment facilitates. Tutors for BIGSS 2020 will include: Martin Booth (Oxford): Advanced Microscopy Steve Jacques (Washington): Tissue Optics Caroline Boudoux (Montreal): Endoscopy David Sampson (Surrey): OCT Sarah Bohndiek (Cambridge): Photoacoustics ...
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    5. Microscale light management and inherent optical properties of intact corals studied with optical coherence tomography

      Microscale light management and inherent optical properties of intact corals studied with optical coherence tomography
      Coral reefs are highly productive photosynthetic systems and coral optics studies suggest that such high efficiency is due to optimized light scattering by coral tissue and skeleton. Here, we characterize the inherent optical properties, i.e. the scattering coefficient, s , and the anisotropy of scattering, g , of eight intact coral species using optical coherence tomography (OCT). Specifically, we describe light scattering by coral skeletons, coenoarc tissues, polyp tentacles and areas ...
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    6. Microscale light management and inherent optical properties of intact corals studied with optical coherence tomography

      Microscale light management and inherent optical properties of intact corals studied with optical coherence tomography
      Coral reefs are highly productive photosynthetic systems and coral optics studies suggest that such high efficiency is due to optimised light scattering by coral tissue and skeleton. Here, we characterise the inherent optical properties, i.e., the scattering coefficient, s , and the anisotropy of scattering, g , of 8 intact coral species using optical coherence tomography (OCT). Specifically, we describe light scattering by coral skeletons, coenoarc tissues, polyp tentacles and areas ...
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    7. Feature Of The Week 03/05/2017: In Vivo Imaging of Coral Tissue and Skeleton with Optical Coherence Tomography

      Feature Of The Week 03/05/2017: In Vivo Imaging of Coral Tissue and Skeleton with Optical Coherence Tomography
      Optical coherence tomography (OCT) is a non-invasive three-dimensional imaging technique with micrometer resolution allowing microstructural characterization of tissues in vivo and in real time. We present the first application of OCT for in vivo imaging of tissue and skeleton structure of intact living corals spanning a variety of morphologies and tissue thickness. OCT visualized different coral tissue layers (e.g. endoderm vs ectoderm), special structures such as mesenterial filaments and ...
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    8. In vivo imaging of coral tissue and skeleton with optical coherence tomography

      In vivo imaging of coral tissue and skeleton with optical coherence tomography
      Application of optical coherence tomography (OCT) for in vivo imaging of tissue and skeleton structure of intact living corals enabled the non-invasive visualization of coral tissue layers (endoderm versus ectoderm), skeletal cavities and special structures such as mesenterial filaments and mucus release from intact living corals. Coral host chromatophores containing green fluorescent protein-like pigment granules appeared hyper-reflective to near-infrared radiation allowing for excellent optical contrast in OCT and a rapid ...
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    9. In vivo imaging of coral tissue and skeleton with optical coherence tomography

      In vivo imaging of coral tissue and skeleton with optical coherence tomography
      Optical coherence tomography (OCT) is a non-invasive three-dimensional imaging technique with micrometer resolution allowing microstructural characterization of tissues in vivo and in real time. We present the first application of OCT for in vivo imaging of tissue and skeleton structure of intact living corals spanning a variety of morphologies and tissue thickness. OCT visualized different coral tissue layers (e.g. endoderm vs ectoderm), special structures such as mesenterial filaments and ...
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    10. Minimal basilar membrane motion in low-frequency hearing

      Minimal basilar membrane motion in low-frequency hearing
      To perceive speech, the brain relies on inputs from sensory cells located near the top of the spiral-shaped cochlea. This low-frequency region of the inner ear is anatomically difficult to access, and it has not previously been possible to study its mechanical response to sound in intact preparations. Here, we used optical coherence tomography to image sound-evoked vibration inside the intact cochlea. We show that low-frequency sound moves a small ...
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    11. Oregon Health and Science University Receives NIH Grant for Ossicle Vibration Measurement sin Conductive Hearing Loss

      Oregon Health and Science University Receives NIH Grant for Ossicle Vibration Measurement sin Conductive Hearing Loss
      Oregon Health and Science University Receives a 2016 NIH Grant for $418,717 for Ossicle Vibration Measurement sin Conductive Hearing Loss. The principal investigator is Steven Jaques. The program began in 2013 and ends in 2017. Below is a summary of the proposed work. The proposal develops a hand-held otoscope that uses optical coherence tomography (OCT) to image the tympanic membrane and ossicles behind an intact tympanic membrane. The system ...
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    12. BIOPHOTONICS AND IMAGING SUMMER SCHOOL (BIGSS 2016)

      BIOPHOTONICS AND IMAGING SUMMER SCHOOL (BIGSS 2016)
      The Bi-annual Biophotonics and Imaging Summer School (BIGSS16) will be held 5-9 September 2016 in Galway, Ireland. It is a five ECTS accredited course with leading professors teaching. Sessions are approx. four hours each to give a substantial grounding in the main topics of Biophotonics. The location is in the picturesque village of Ballyvaughanin the Burren . This will be augmented with hands on training at NUI Galway. Fee: 800 including ...
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    13. Minimally invasive surgical method to detect sound processing in the cochlear apex by optical coherence tomography

      Minimally invasive surgical method to detect sound processing in the cochlear apex by optical coherence tomography
      Sound processing in the inner ear involves separation of the constituent frequencies along the length of the cochlea. Frequencies relevant to human speech (100 to 500 Hz) are processed in the apex region. Among mammals, the guinea pig cochlear apex processes similar frequencies and is thus relevant for the study of speech processing in the cochlea. However, the requirement for extensive surgery has challenged the optical accessibility of this area ...
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    14. Development of a phase-sensitive Fourier domain optical coherence tomography system to measure mouse organ of Corti vibrations in two cochlear turns

      Development of a phase-sensitive Fourier domain optical coherence tomography system to measure mouse organ of Corti vibrations in two cochlear turns
      In this study, we have developed a phase-sensitive Fourier-domain optical coherence tomography system to simultaneously measure the in vivo inner ear vibrations in the hook area and second turn of the mouse cochlea. This technical development will enable measurement of intra-cochlear distortion products at ideal locations such as the distortion product generation site and reflection site. This information is necessary to un-mix the complex mixture of intra-cochlear waves comprising the ...
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    15. Methods of Melanoma Detection

      Methods of Melanoma Detection
      Detection and removal of melanoma, before it has metastasized, dramatically improves prognosis and survival. The purpose of this chapter is to (1) summarize current methods of melanoma detection and (2) review state-of-the-art detection methods and technologies that have the potential to reduce melanoma mortality. Current strategies for the detection of melanoma range from population-based educational campaigns and screening to the use of algorithm-driven imaging technologies and performance of assays that ...
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  2. About Steven L. Jacques

    Steven L. Jacques

    Steven L. Jacques, PhD, now serves as Professor of Dermatology and Biomedical Engineering at the Oregon Health and Science University. Professor Steven L. Jacques, PhD, received a BS degree in Biology at M.I.T., and both an MS degree in Electrical Engineering and Computer Science and a PhD degree in Biophysics and Medical Physics from the University of California-Berkeley (1984). Dr. Jacques has authored over 100 papers in peer-reviewed journals. His research interests include biomedical optics, laser-tissue interactions and development of diagnostic and therapeutic devices for medicine and biology using optical technologies.