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.
Results
Showing 1 to 20 of 28 for “"Co-registration"”.
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Histological characterization of CT-identified osteoarthritic subchondral cysts and co-registration of CT with MRI
… a chronic disease that affects the joints, most commonly hands, hips, knees, feet, and spine (Litwic et al. 2013). The disease becomes more common with advanced age and is one of the most prevalent causes of disability in older populations. Currently there is no cure besides total joint …
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Advancing Photoacoustic Imaging Technology with Compact Source, Fluorescence Co-registration, Spectral Encoding, Matrix Detection and FRET
<p>Photoacoustic tomography, which detects non-radiative decay, is an emerging biomedical imaging modality that can provide 3D ultrasonically scalable images of biological tissue ranging from organelles to organs. Pure optical imaging modalities (e.g., optical coherence tomography and diffuse …
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Segmentation, co-registration, and correlation of optical coherence tomography and X-ray images for breast cancer diagnostics
In this thesis, x-ray imaging is evaluated and compared with optical coherence tomography (OCT). It is shown that each individual modality provides information about a sample through different physical characteristics. The preclinical variant of x-ray imaging is explored in the context of breast …
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A Framework for 3D Mouse Brain Reconstruction: RNA-based Stitching of Adjacent Tissue Slices and Co-Registration of Multimodal Imaging Data
Mapping the brain’s complex neural networks requires tracing the long-distance pathways of individual axons, a task that demands a comprehensive 3D reconstruction of the brain. Recently, spatially resolved transcriptomics (SRT) methods enable the study of gene expression and biomolecule …
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EXPLORING PHYSIOLOGICAL, PATHOLOGICAL AND PARAPHYSIOLOGICAL BRAIN ACTIVITY ACROSS SCALES WITH SIMULTANEOUS INVASIVE AND NON-INVASIVE EEG
… physiological and paraphysiological contexts. The combination of these two methods, known as "co-registration," leverages the high temporal resolution and full-brain coverage of hd-EEG with the spatial precision of SEEG, allowing for a more comprehensive view of brain activity. The …
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Multimodal Data Fusion for Deep Learning Applications in Intracoronary Image Segmentation
This thesis describes steps towards the construction of a multi-anatomical, multimodal segmentation and co-registration platform for intracoronary images. Although manual annotation and co-registration of intracoronary images from different modalities remain the gold standard today for facilitating …
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A New Eye On Semantics: Probing the Spatiotemporal Brain Dynamics Underlying Natural Reading
… thesis, I examined the influence of task and context on the semantic processing of single words in isolation and in a sentence context. In one study, I considered task effects on single-word semantic representations using multivariate pattern analysis. In two further studies, I tested whether …
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Distributional modelling in forestry and remote sensing
… distribution is found to be the best among those compared. The use of regression-based methods of parameter estimation is also investigated. In the domain of bivariate distribution modelling of tree diameters and heights the Plackett method (a particular form of copula) is used to construct …
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Machine Learning and its Application in Automatic Change Detection in Medical Images
… mathematical frameworks and limitations. Second, we present our contributions in solving the problem. We design optimal subspaces to approximate the background image in more efficient fashion. This is based on our structure principal component analysis, aiming to capture the structural …
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The effects of 3-dimensional CADD modeling software on the development of the spatial ability of ninth grade technology discovery students
… spatial abilities of ninth grade Technology Discovery students in Mississippi as measured by the Purdue Visualization of Rotations Test. Students experienced one of three differing instructional methods utilizing Pro/Desktop® 3-D CADD solid modeling software. Participants were students in …
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The design, construction and testing of a hermetically sealed breast platfrom for dual-modality mammography
… approach include: variable image quality; poor co-registration of X-ray and ultrasound images; and increased costs and patient anxiety. In response to these shortcomings, the Aceso full-field digital mammography and automated breast ultrasound (FFDM+ABUS) system aims to acquire both X-ray and 3D …
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Improved methods for rapid and scalable tissue clearing and labeling
Combined measurement of diverse molecular and anatomical traits that span multiple levels remains a major challenge in biology. Here, we introduce a simple method that enables proteomic imaging for scalable, integrated, high-dimensional phenotyping of both animal tissues and human clinical samples. …
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Three applications of satellite borne repeat pass SAR interferometry in Southern Africa
… information. The process requires very careful co-registration of a pair of complex images of the same scene, followed by the multiplication of the one image by the complex conjugate of the other. In this manner, a phase difference image, or interferogram is generated, in which subtle …
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Oculomotor and electrophysiological markers of cognitive distraction during low-level and complex visual tasks
Distraction during driving is one of the leading contributors to injury and mortality rates in traffic accidents. The aim of this current thesis was to consider 1) whether oculomotor and electrophysiological metrics could act as markers of cognitive distraction; 2) whether decrements in hazard …
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Multi-modal molecular imaging of radiation therapy response in the tumour vascular microenvironment
Radiation therapy is recognised globally as a mainstay of treatment in most solid tumours and is essential in both curative and palliative settings. The use of ionising radiation is frequently combined with surgery, either preoperatively or postoperatively, as well as with systemic chemotherapy. …
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An informatics system for exploring eye movements in reading
… widely used in many research areas including cognitive science, psychology, human-computer interaction, marketing research, medical research etc. Many computer programs have emerged to help these researchers to design experiments, present visual stimuli and process the large quantity of …
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Unravelling the Spatial and Temporal Heterogeneity of High-Grade Serous Ovarian Cancer Using Imaging-Based Biomarkers
… which has been linked to poor survival outcomes. In this challenging landscape, the quest to characterise heterogeneity through non-invasive image-based biomarkers extracted from routinely collected radiological data is paramount. These biomarkers hold the potential to improve predictions …
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Automatic Alignment of 3D Multi-Sensor Point Clouds
… is a major research topic in photogrammetry, computer vision and computer graphics. In this research, two keypoint feature matching approaches have been developed and proposed for the automatic alignment of 3D point clouds, which have been acquired from different sensor platforms and are in …
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Integrative and Scalable Pipeline for Multi-omic Characterization of Biological Tissues
… the state of health and disease. Specifically, comprehensive characterization of the mammalian brain is crucial to understand brain physiology and neurological diseases. Depending on the goal of the study, various brain models, such as those involving mice, postmortem humans, and …
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