Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 335 for “"OCT"”.
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Forward viewing OCT endomicroscopy
A forward viewing fiber optic-based imaging probe device was designed and constructed for use with ultrahigh speed optical coherence tomography in the human gastrointestinal tract. The light source was a MEMS-VCSEL at 1300 nm wavelength running at 300 kHz sweep rate, giving an effective A-line rate …
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Digital signal processing techniques for optical coherence tomography : OCT and OCT image enhancement
… resolution optical coherence tomography (OCT) systems. To reduce the dependence of OCT research systems on fixed analog electronics and to improve overall system flexibility, a digital demodulation scheme implemented entirely in software was developed. This improvement allowed rapid …
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Deep learning-based M-mode OCT system and B-mode OCT system diagnosis accuracy comparison
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
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Ecografia ed OCT nelle patologie maculari
… maculari, per sostituire il ruolo dell' OCT nei casi in cui esso presenta dei limiti . L'ecografia ad alta risoluzione con sonda B-scan da 20 MHz ha dimostrato, per la diagnosi di Pucker Maculare, un'elevata Sensibilità e una buona Specificità.
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En face OCT imaging for the assessment of glaucoma
… and demands early and accurate diagnosis. OCT has become a key investigative technique in glaucoma, and, although it provides invaluable clinical support, detection of early glaucoma remains imperfect. Recent OCT developments enabled direct assessment of retinal nerve fibre bundle (RNFB) …
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Design Of A Dynamic Focusing Microscope Objective For Oct Imaging
Optical Coherence Tomography (OCT) is a novel optical imaging technique that has assumed significant importance in bio-medical imaging in the last two decades because it is non-invasive and provides accurate, high resolution images of three dimensional cross-sections of body tissue, exceeding the …
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Image Processing of OCT Glaucoma Images and Information Theory Analysis
… of glaucoma. Optical Coherence Tomography (OCT) is one of the known techniques of diagnosis of glaucoma. The patients' eyes are scanned and sub-surface images are captured from optical nerves. Captured OCT images usually suffer from noise and therefore image enhancement techniques can help …
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Optical domain subsampling for data-efficient optical coherence tomography (OCT)
Recent advances in optical coherence tomography (OCT) have led to higher-speed sources that support imaging over longer depth ranges. Limitations in the bandwidth of state-of-the-art acquisition electronics, however, prevent adoption of these advances into clinical applications. This thesis …
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Structural and biochemical studies of Oct-1 POU domain-DNA interactions
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Biology, 1995.
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Functional specificity and design of transcription factor : the Oct-1 homeodomain
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Biology, 1995.
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Prácticas productivas de sanidad animal comprendidas desde: 1 Oct - 17 Dic 1992
I. INTRODUCCION..............1; 1.1. Objetivos................ 3; 1.2. Deberes y Derechos........4; 1.3. Logros obtenidos...........5; II. CARACTERIZACION DEL CENTRO DE PRODUCCION...........6; III. GINECOLOGIA Y OBSTETRICIA......................16; IV. SANIDAD ANIMAL.......34; 4.1. Anatomía …
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Micro-motion detection by optical coherence tomography (OCT) and its clinical applications
… thesis focused on optical coherence tomography (OCT) and in particular on phase-sensitive optical coherence tomography (PhS-OCT). In this thesis, a PhS-OCT system is developed for micro-motion detection and a dual camera PhS-OCT system is developed to double the imaging acquiring speed and …
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Point-Spread Function Assessment of SG-DBR Based Swept Source for OCT Imaging
<p> Swept Source Optical Coherence Tomography (SS-OCT) is a medical imaging technique that requires high repetition rate, widely-tunable coherent laser sources. Sampled grating distributed Bragg reflector (SG-DBR) lasers are proven in telecom applications and are expected to fulfill the …
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Development of a three-dimensional camera based on subsampled optical coherence tomography (OCT)
Optical coherence tomography (OCT) allows label-free, three-dimensional imaging of tissue structure. Current implementations of OCT can either image over long depth ranges at slow imaging speeds, or over limited depth ranges at high speeds. Here, we describe a new OCT paradigm that supports …
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Deep learning methods for real-time corneal and needle segmentation in volumetric OCT scans
… endothelial layer. Optical coherence tomography (OCT) is used to help surgeons judge the needle insertion depth. However, the needle obscures the part of the cornea underneath it, making it difficult to estimate needle insertion depth. In this thesis, deep learning methods are explored for cornea …
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Old protein, new perspective : the role of Oct-1 during embryonic development and lymphopoiesis
… acting elements with trans acting factors. The octamer element (5'ATGCAAAT-3') is conserved in Ig promoters and enhancers and is thought to be important in transcriptional regulation. To date, only two octamer-binding proteins have been identified in B cells, the ubiquitously expressed Oct-1 and …
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Measurement methodologies to assess conservation treatments: validation of OCT for the cleaning of historical artefacts
L'abstract è presente nell'allegato / the abstract is in the attachment
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Part One. Synthesis and Reactivity of Tetracyclo(3.3.0.0(3,6).0(2,8))oct-4-Yl Derivatives. Part Two. Reactivity and Degenerate Rearrangement of Tricyclononadienyl Derivatives
Made available in DSpace on 2014-12-10T23:01:29Z (GMT). No. of bitstreams: 1 7310092.pdf: 3960750 bytes, checksum: 8bd9c4c96c502d23f1824a807dc30114 (MD5) Previous issue date: 1972
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Ultrahigh speed optical coherence tomography for ophthalmic imaging applications
Optical coherence tomography (OCT) is a non-contact, non-invasive, micron-scale optical imaging technology that has become a standard clinical tool in ophthalmology. Fourier domain OCT detection methods have enabled higher sensitivity and imaging speeds compared to previous generation timedomain …
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Catheter for endoscopic magnetomotive optical coherence tomography
… magnetomotive optical coherence tomography (MM-OCT). Magnetomotive optical coherence tomography is a novel technique which uses targeted magnetic contrast agents for contrast enhancement of OCT imaging. In MM-OCT, microspheres and magnetic nanoparticles (MNPs) are introduced into tissue and an …
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