1. King Abdullah University of Science and Technology

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    1. Mentioned In 12 Articles

    2. Posterior Segment Optical Coherence Tomography Findings in a Case of Nephropathic Cystinosis

      Posterior Segment Optical Coherence Tomography Findings in a Case of Nephropathic Cystinosis
      Cystinosis is a rare autosomal recessive lysosomal storage disorder characterized by abnormal accumulation of intracellular cystine in various tissues including the brain, kidneys, bones, and eyes. Infantile nephropathic cystinosis is the most severe phenotype of cystinosis that has been associated with a wide spectrum of ocular features. In this report, the author describes a posterior segment spectral-domain optical coherence tomography (SD-OCT) finding that has not been previously reported in a ...
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    3. Does lining class-II cavities with flowable composite improve the interfacial adaptation?

      Does lining class-II cavities with flowable composite improve the interfacial adaptation?
      The objective of this study was to assess in-vitro interfacial cavity adaptation of different adhesive/composites systems in class-II restoration using SS-OCT and to confirm the findings with a confocal laser scanning microscope (CLSM). Standardized rectangular-shaped class-II cavities were prepared on 24 extracted human molar teeth, bonded with adhesive and lined with flowable composite. Cavities were further restored by bulk filling using packable composite. Specimens were divided into four groups ...
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    4. Measurement of Normative Foveal Avascular Zone Parameters in Healthy Adults Using Optical Coherence Tomography Angiography

      Measurement of Normative Foveal Avascular Zone Parameters in Healthy Adults Using Optical Coherence Tomography Angiography
      Background and Objective: The purpose of this study was to quantify the geometric dimension of the foveal avascular zone (FAZ) area and its index measurement of morphology as a circle (acircularity index) in healthy participants according to age and sex, using optical coherence tomography angiography (OCTA). Study Design/Materials and Method: This is a cross-sectional descriptive study conducted at LV Prasad Eye Institute, India. Written informed consent was obtained from ...
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    5. Evaluating the effect of different draw solutes in a baffled osmotic membrane bioreactor-microfiltration using optical coherence tomography with real wastewate

      Evaluating the effect of different draw solutes in a baffled osmotic membrane bioreactor-microfiltration using optical coherence tomography with real wastewate
      This study investigated the performance of an integrated osmotic and microfiltration membrane bioreactor for real sewage employing baffles in the reactor. To study the biofouling development on forward osmosis membranes optical coherence tomography (OCT) technique was employed. On-line monitoring of biofilm growth on a flat sheet cellulose triacetate forward osmosis (CTA-FO) membrane was conducted for 21 days. Further, the process performance was evaluated in terms of water flux, organic and ...
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    6. Fouling development in direct contact membrane distillation: Non-invasive monitoring and destructive analysis

      Fouling development in direct contact membrane distillation: Non-invasive monitoring and destructive analysis
      Fouling development in direct contact membrane distillation (DCMD) for seawater desalination was evaluated combining in-situ monitoring performed using optical coherence tomography (OCT) together with destructive techniques. The non-invasive monitoring with OCT provided a better understanding of the fouling mechanism by giving an appropriate sampling timing for the membrane autopsy. The on-line monitoring system allowed linking the flux trend with the structure of fouling deposited on the membrane surface. The water ...
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    7. Biofouling investigation in membrane filtration systems using Optical Coherence Tomography (OCT) (Thesis)

      Biofouling investigation in membrane filtration systems using Optical Coherence Tomography (OCT)  (Thesis)
      Biofouling represents the main problem in membrane filtration systems. Biofouling arises when the biomass growth negatively impacts the membrane performance parameters (i.e. flux decrease and feed channel pressure drop). Most of the available techniques for characterization of biofouling involve membrane autopsies, providing information ex-situ destructively at the end of the process. OCT, is non-invasive imaging technique, able to acquire scans in-situ and non-destructively. The objective of this study was ...
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    8. Statistical model for OCT image denoising

      Statistical model for OCT image denoising
      Optical coherence tomography (OCT) is a non-invasive technique with a large array of applications in clinical imaging and biological tissue visualization. However, the presence of speckle noise affects the analysis of OCT images and their diagnostic utility. In this article, we introduce a new OCT denoising algorithm. The proposed method is founded on a numerical optimization framework based on maximum-a-posteriori estimate of the noise-free OCT image. It combines a novel ...
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    9. Multiple Scattering Model for Optical Coherence Tomography with Rytov Approximation (Thesis)

      Multiple Scattering Model for Optical Coherence Tomography with Rytov Approximation (Thesis)
      Optical Coherence Tomography (OCT) is a coherence-gated, micrometer-resolution imaging technique that focuses a broadband near-infrared laser beam to penetrate into optical scattering media, e.g. biological tissues. The OCT resolution is split into two parts, with the axial resolution defined by half the coherence length, and the depth-dependent lateral resolution determined by the beam geometry, which is well described by a Gaussian beam model. The depth dependence of lateral resolution ...
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    10. Feature of the Week 01/23/2017: In-Situ Biofouling Assessment in Spacer Filled Channels Using Optical Coherence Tomography - Biofilm Thickness Mapping

      Feature of the Week 01/23/2017: In-Situ Biofouling Assessment in Spacer Filled Channels Using Optical Coherence Tomography - Biofilm Thickness Mapping
      ...he biofilm behavior in aquatic system. For more information see recent Article . Courtesy Luca Fortunato from King Abdullah University of Science and Technology . Biofouling is a one of the major problem in membrane filt...
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    11. In-situ biofouling assessment in spacer filled channels using optical coherence tomography (OCT): 3D biofilm thickness mapping

      In-situ biofouling assessment in spacer filled channels using optical coherence tomography (OCT): 3D biofilm thickness mapping
      Membrane systems for water purification can be seriously hampered by biofouling. The use of optical coherence tomography (OCT) to investigate biofilms in membrane systems has recently increased due to the ability to do the characterization in-situ and non-destructively. The OCT biofilm thickness map is presented for the first time as a tool to assess biofilm spatial distribution on a surface. The map allows the visualization and evaluation of the biofilm ...
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    12. Spatially-resolved in-situ quantification of biofouling using optical coherence tomography (OCT) and 3D image analysis in a spacer filled channel

      Spatially-resolved in-situ quantification of biofouling using optical coherence tomography (OCT) and 3D image analysis in a spacer filled channel
      The use of optical coherence tomography (OCT) to investigate biomass in membrane systems has increased with time. OCT is able to characterize the biomass in-situ and non-destructively. In this study, a novel approach to process three-dimensional (3D) OCT scans is proposed. The approach allows obtaining spatially-resolved detailed structural biomass information. The 3D biomass reconstruction enables analysis of the biomass only, obtained by subtracting the time zero scan to all images ...
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    13. In-situ assessment of biofilm formation in submerged membrane system using optical coherence tomography and computational fluid dynamics

      In-situ assessment of biofilm formation in submerged membrane system using optical coherence tomography and computational fluid dynamics
      This paper introduces a novel approach to study the biofouling development on gravity driven submerged membrane bioreactor (SMBR). The on-line monitoring of biofilm formation on a flat sheet membrane was conducted non-destructively using optical coherence tomography (OCT), allowing the in-situ investigation of the biofilm structure for 43 d. The OCT enabled to obtain a time-lapse of biofilm development on the membrane under the continuous operation. Acquired real-time information on the ...
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    14. 1-12 of 12
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  2. About King Abdullah University of Science and Technology

    King Abdullah University of Science and Technology

    King Abdullah University of Science and Technology (KAUST)  was founded in 2009 and focuses on graduate education and research, using English as the official language of instruction . It offers programs in Biological and Environmental Science and Engineering ; Computer, Electrical and Mathematical Science and Engineering ; and Physical Science and Engineering .