1. University of São Paulo

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    1. Mentioned In 90 Articles

    2. Influence of Bruch’s Membrane Opening Area in Diagnosing Glaucoma with Neuroretinal Parameters from Optical Coherence Tomography

      Influence of Bruch’s Membrane Opening Area in Diagnosing Glaucoma with Neuroretinal Parameters from Optical Coherence Tomography
      Purpose To determine whether the glaucoma diagnostic accuracy of age and Bruchs membrane opening area (BMOA) adjusted normative classifications of minimum rim width (MRW) and retinal nerve fibre layer thickness (RNFLT) is dependent on BMOA, in a European descent population. Design Retrospective, cross-sectional study. Methods We included 182 glaucoma patients and 166 healthy controls for the primary study, and 105 glaucoma patients in a second sample used for a replication ...
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    3. Characterization and Comparative Analysis of Voids in Class II Composite Resin Restorations by Optical Coherence Tomography

      Characterization and Comparative Analysis of Voids in Class II Composite Resin Restorations by Optical Coherence Tomography
      Purpose This study aimed to characterize and analyze the number of voids and the percentage of void volume within and between the layers of class II composite restorations made using the bulk fill technique or the incremental technique by optical coherence tomography (OCT). Methods and Materials Class II cavities (442 mm) were prepared in 48 human third molars (n=24 restorations per group, two class II cavities per tooth). Teeth ...
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    4. First Report of Edge Vascular Response at 12 Months of Magmaris, A Second-Generation Drug-Eluting Resorbable Magnesium Scaffold, Assessed by Grayscale Intravascular Ultrasound, Virtual Histology, and Optical Coherence Tomography. A Biosolve-II Trial Sub-S

      First Report of Edge Vascular Response at 12 Months of Magmaris, A Second-Generation Drug-Eluting Resorbable Magnesium Scaffold, Assessed by Grayscale Intravascular Ultrasound, Virtual Histology, and Optical Coherence Tomography. A Biosolve-II Trial Sub-S
      Introduction and objective The edge vascular response (EVR) remains unknown in second generation drug-eluting Resorbable Magnesium Scaffold (RMS), such as Magmaris. The aim of the study was to evaluate tissue modifications in the RMS edges over time, assessed by different invasive imaging modalities. Methods The patients treated with the device were assessed by optical coherence tomography (OCT), grayscale intravascular ultrasound (IVUS), and virtual histology IVUS at baseline and 12 months ...
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    5. Comparative Intraoperative Anterior Segment Optical Coherence Tomography Findings in Pediatric Patients with and without Glaucoma

      Comparative Intraoperative Anterior Segment Optical Coherence Tomography Findings in Pediatric Patients with and without Glaucoma
      Purpose To compare the angle structures intraoperatively using anterior segment optical coherence tomography (AS OCT) in children with and without glaucoma. Design Prospective comparative study, with single masked grader evaluating AS OCT images. Participants This study included a total of 44 eyes of 8 children with glaucoma and 14 children without glaucoma undergoing ophthalmic surgery under general anesthesia. The median age for the glaucoma group was 6 months (range 0 ...
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    6. General model for depth‐resolved estimation of the optical attenuation coefficients in optical coherence tomography

      General model for depth‐resolved estimation of the optical attenuation coefficients in optical coherence tomography
      We present the proof of concept of a general model that uses the tissue sample transmittance as input to estimate the depth‐resolved attenuation coefficient of tissue samples using Optical Coherence Tomography. This method allows us to obtain an image of tissue optical properties instead of intensity contrast, guiding diagnosis and tissues differentiation, extending its application from thick to thin samples. The performance of our method was simulated and tested ...
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    7. SURGICAL REMOVAL OF EPIRETINAL MEMBRANE WITH AND WITHOUT REMOVAL OF INTERNAL LIMITING MEMBRANE Comparative Study of Visual Acuity, Features of Optical Coherence Tomography, and Recurrence Rate

      SURGICAL REMOVAL OF EPIRETINAL MEMBRANE WITH AND WITHOUT REMOVAL OF INTERNAL LIMITING MEMBRANE Comparative Study of Visual Acuity, Features of Optical Coherence Tomography, and Recurrence Rate
      Purpose: To study and compare visual acuity, foveal thickness, outer limiting layer, ellipsoid zone, and recurrence rate in patients undergoing removal of the epiretinal membrane with and without the removal of the internal limiting membrane (ILM). Methods: Sixty-three patients who had the epiretinal membrane removed by a single surgeon were randomly assigned into 2 groups: Group 1 without additional removal of the ILM and Group 2 with removal of the ...
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    8. Architecture evaluation of the main clear corneal incisions in femtosecond laser-assisted cataract surgery by optical coherence tomography imaging

      Architecture evaluation of the main clear corneal incisions in femtosecond laser-assisted cataract surgery by optical coherence tomography imaging
      Purpose: To assess the stability and reliability of femtosecond laser-assisted cataract surgery (FLACS) incisions design and dimensions using anterior segment optical coherence tomography (AS-OCT) imaging. Setting: Renato Ambrsio Ophthalmologic Study Center from Hospital Oftalmolgico de Braslia, Braslia, Brazil. Design: Prospective nonrandomized controlled case series. Methods: Eyes undergoing FLACS with triplanar main temporal clear corneal incision (CCI) were evaluated at the end of the case. Eyes that required any incision hydration ...
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    9. Optimized Automated Segmentation and 3D Reconstruction Using Intracoronary Optical Coherence Tomography

      Optimized Automated Segmentation and 3D Reconstruction Using Intracoronary Optical Coherence Tomography
      Real time segmentation and three-dimensional (3D) reconstruction of the coronary arteries is challenging and limited by the increased computational time of the developed computer-aided methods. We present a novel and time-efficient method for intracoronary lumen detection which produces 3D coronary arteries using Optical Coherence Tomographic (OCT) images. OCT images are acquired for multiple patients and longitudinal cross-section (LOCS) images are reconstructed using different acquisition angles. The lumen contours for each ...
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    10. Multiple Research Scientist and Postdoctoral Positions in Computer Aided Diagnosis Department of Biomedical Engineering, Texas A&M University, College Station-Texas

      Multiple Research Scientist and Postdoctoral Positions in Computer Aided Diagnosis Department of Biomedical Engineering, Texas A&M University, College Station-Texas
      The Laboratory for Optical Diagnosis and Imaging ( http://biomed.tamu.edu/LODI ) in the Department of Biomedical Engineering at Texas AM University invites applications for multiple research scientist and postdoctoral positions in the area of computer aided diagnosis (CAD) system development. Ideal candidates should have substantial experience in 2D and 3D pattern recognition, computer vision, image analysis, and machine learning. Experience in both deep learning and medical imaging analysis is ...
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    11. Multiple Research Scientist and Postdoctoral Positions in Endoscopic Instrumentation Department of Biomedical Engineering, Texas A&M University, College Station-Texas

      Multiple Research Scientist and Postdoctoral Positions in Endoscopic Instrumentation Department of Biomedical Engineering, Texas A&M University, College Station-Texas
      The Laboratory for Optical Diagnosis and Imaging ( http://biomed.tamu.edu/LODI ) in the Department of Biomedical Engineering at Texas AM University invites applications for multiple research scientist and postdoctoral positions in the area of endoscopic instrumentation development. Ideal candidates should have expertise in optical design, data acquisition instrumentation and software development, and substantial demonstrated experience in optical imaging and/or spectroscopic instrumentation design and implementation. Experience in fluorescence lifetime ...
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    12. SURGICAL REMOVAL OF EPIRETINAL MEMBRANE WITH AND WITHOUT REMOVAL OF INTERNAL LIMITING MEMBRANE: Comparative Study of Visual Acuity, Features of Optical Coherence Tomography, and Recurrence Rate

      SURGICAL REMOVAL OF EPIRETINAL MEMBRANE WITH AND WITHOUT REMOVAL OF INTERNAL LIMITING MEMBRANE: Comparative Study of Visual Acuity, Features of Optical Coherence Tomography, and Recurrence Rate
      Purpose: To study and compare visual acuity, foveal thickness, outer limiting layer, ellipsoid zone, and recurrence rate in patients undergoing removal of the epiretinal membrane with and without the removal of the internal limiting membrane (ILM). Methods: Sixty-three patients who had the epiretinal membrane removed by a single surgeon were randomly assigned into 2 groups: Group 1 without additional removal of the ILM and Group 2 with removal of the ...
      Read Full Article
    13. Optimized computer-aided segmentation and 3D reconstruction using intracoronary optical coherence tomography

      Optimized computer-aided segmentation and 3D reconstruction using intracoronary optical coherence tomography
      We present a novel and time-efficient method for intracoronary lumen detection which produces three-dimensional (3D) coronary arteries using Optical Coherence Tomographic (OCT) images. OCT images are acquired for multiple patients and longitudinal cross-section (LOCS) images are reconstructed using different acquisition angles. The lumen contours for each LOCS image are extracted and translated to 2D cross-sectional images. Using two angiographic projections the centerline of the coronary vessel is reconstructed in 3D ...
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    14. OPTICAL COHERENCE TOMOGRAPHY ANALYSIS OF OUTER RETINAL TUBULATIONS: Sequential Evolution and Pathophysiological Insights

      OPTICAL COHERENCE TOMOGRAPHY ANALYSIS OF OUTER RETINAL TUBULATIONS: Sequential Evolution and Pathophysiological Insights
      Purpose: To describe the sequential evolution of outer retinal tubulations (ORTs) in patients diagnosed with choroidal neovascularization and/or retinal pigment epithelium atrophy. Methods: Retrospective evaluation of spectral domain optical coherence tomography of a consecutive cohort of patients with various retinal conditions. Results: We reviewed the clinical findings of 238 eyes of 119 consecutive patients (54 men and 65 women) with a mean age of 76.2 +/- 14.2 years ...
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    15. Structure-functional correlation using adaptive optics, OCT, and microperimetry in a case of occult macular dystrophy

      Structure-functional correlation using adaptive optics, OCT, and microperimetry in a case of occult macular dystrophy
      We report retinal functional and structural changes of a 40-year-old man diagnosed with occult macular dystrophy. Comprehensive ophthalmological evaluation was performed, followed by spectral-domain optical coherence tomography (SD-OC - Heidelberg) and image acquisition using an adaptive optics (AO) camera (RTX1, Imagine Eyes) for photoreceptor density analysis. Functional tests included full-field ERG (ERG) and multifocal electroretinography (mfERG) (Diagnosys, LLC) and microperimetry with scanning laser ophthalmoscope (SLO) fixation controlled (MAIA, CenterVUE). OCT revealed ...
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  2. About University of São Paulo

    University of São Paulo

    University of São Paulo (USP) is the largest institution dedicated to higher education and research in Brazil. A large part of the Brazilian masters and PhDs receive their training here. This website will tell you a little more about our structure, application procedures and the services we offer to students from abroad.