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 56 for “"Region of Interest (ROI)"”.
-
On-board Robotic Multi-pinhole SPECT System for Region-of-interest (ROI) Imaging
… could potentially improve the effectiveness of radiation therapy. However, current on-board imaging systems are limited in their functional and molecular imaging capability. Single Photon Emission Computed Tomography (SPECT) is a candidate to achieve on-board functional and molecular imaging. …
-
FMRI guided DTI at the grey-white matter interface : with application to a connectivity analysis of the default mode network in Urbach-Wiethe disease
The cerebral cortex is composed of a thin layer of Grey Matter (GM), functionally subdivided into discrete regions which are connected in a large scale network via White Matter (WM) tracts. With fMRI (Functional Magnetic Resonance Imaging) it is possible to identify cortical regions involved in …
-
A targeted reverse mapping machine learning approach for non-dominated solutions in multi-objective optimization
… by biological populations, are effective but often provide limited solutions within the decisionmakers’ region of interest (ROI) on the Pareto front. Recent advancements in machine learning have shown promise in generating solutions, yet they suffer from a lack of control and require knowledge …
-
Data fusion techniques for nondestructive evaluation and medical image analysis
… for an enhanced detection or decision. Fusion of data can be done at the raw-data level, feature level or decision level. Applications of data fusion include defense (such as battlefield surveillance and autonomous vehicle control), medical diagnosis and structural health monitoring. Techniques …
-
Phonological and semantic influences on auditory word perception in children with and without reading impairments using magnetoencephalography (MEG) and electroencephalography (EEG)
… has been a growing consensus about the role of phonological processing in reading disability. Poor readers typically do worse than their normal reading peers on tasks that require phonological processing which has been linked, directly or indirectly, to their speech perception abilities. The …
-
Deep Learning Models for Context-Aware Object Detection
… methods for object detection exploit state-of-the-art image recognition networks for classifying the given region-of-interest (ROI) to predefined classes and regressing a bounding-box around it without using any information about the corresponding scene. ContextNet is based on an intuitive …
-
Data fusion techniques for biomedical informatics and clinical decision support
… decision-based levels. Data fusion applications of different sorts have been built up in areas such as statistics, computer vision and other machine learning aspects. It has been employed in a variety of realistic scenarios such as medical diagnosis, clinical decision support, and structural …
-
Implementation of Residual Tandem Neural Networks for Photonic Inverse Design
… can greatly benefit the modeling and design of nanophotonic and optical structures. Traditional full-wave simulations are time and resource-intensive, which can act as a bottleneck in photonic design. On the other hand, deep-learning approaches for designing the response of nanophotonic …
-
Motion-robust Machine Learning Methods for Region-of-Interest Tracking and Selective Magnetic Resonance Imaging with External Shim Arrays
… that can be obtained. Despite the adoption of fast single-shot MRI techniques, capable of acquiring images in less than a second per slice, fetal motion remains problematic, leading to noticeable artifacts between slices. These artifacts, which degrade image quality and impede accurate …
-
Statistical analysis of 11CO2 contamination correction in 11C-acetate PET imaging studies
… Tracer choice depends on the biological process of interest, such as tumor metabolism, cell proliferation, or blood flow. The most common tracer is fluorodeoxyglucose ([18F]FDG), which accumulates in tissues with high glucose metabolism (e.g., brain, heart, and many tumors), and is used for …
-
Changes in BMD and Body Composition in Children with Central Precocious Puberty Before and After Treatment with GnRH Agonist
… puberty (CPP) before, during, and after 1 year of treatment with gonadotropin-releasing hormone (GnRH) agonist. BMD, bone mineral content (BMC), lean body mass (LBM), and fat mass (FM) were measured at baseline and after 1 year of treatment with dual energy x-ray absorptiometry (DEXA) and were …
-
Quantification of regional perfusion, shunt fraction and ventilation using positron emission tomography : a nonlinear tracer kinetics model
Quantification of gas exchange in the lung using Positron Emission Tomography (PET) allows validation of mechanistic hypotheses regarding the local regulation of pulmonary function. We have developed a nonlinear lumped-parameter model to simulate the regional kinetics of the tracer 13N2 as measured …
-
Neural Region-of-Interest-Aware Video Compression for Wildlife Monitoring Under Edge Computing Constraints
… clips, the animal occupies only a small part of the frame, while most of the image is background. Standard whole-frame compression does not account for this imbalance and may allocate bitrate to regions that matter less for later review. This thesis presents a region-of-interest (ROI)-aware …
-
Secured information dissemination and misbehavior detection in VANETs
… connected vehicle environment, the vehicles in a region can form a distributed network (Vehicular Ad-hoc Network or VANETs) where they can share traffic-related information such as congestion or no-congestion with other vehicles within its proximity, or with a centralized entity via. the roadside …
-
Relationship between white matter changes and aggression in methamphetamine dependence
… matter (WM) changes. Moreover, increased levels of aggression are commonly found in individuals with MA abuse. Although behavioural deficits are well described, the underlying mechanisms are still poorly understood. While previous studies have examined WM abnormalities relating to cognitive …
-
From Smart Entities Design to the Smart EM Planning and Optimization
… to become a fundamental pillar in the design of next generation wireless communication systems. It is based on the disruptive idea that the environment should be regarded, differently from the past, as an additional degree-of-freedom (DoF) to improve the overall Quality-of-Service (QoS), …
-
Proteomic comparison of biomaterial implants for regeneration of peripheral nerve tissue
Tissue regenerates resulting from the healing of transected peripheral nerve differ in morphological and electrophysiological properties based on the biomaterial implant used to bridge the interneural wound gap. At gap lengths >/=10 mm, impermeable silicone tubes promote little to no nerve …
-
Automated hippocampal location and extraction
… disorders. The highest definition in vivo method of visualizing the anatomy of this structure is structural Magnetic Resonance Imaging (MRI). Gross structure can be assessed by the naked eye inspection of MRI scans but measurement is required to compare scans from individuals within normal ranges, …
-
Advances in the Hyperspectral Imaging Microscope Spectrometer Method, and Application for Measuring the Spectral Reflectance of Light Absorbing Aerosols from the South Cascades, Colorado Rockies, and Iceland
… at a global scale. Warming temperatures are often identified as the dominant cause of this decline; however, deposition of light absorbing aerosols (LAA), including black carbon, mineral dust and organics onto snow and glacier surfaces can be an even larger driver of melt in some regions …
-
Models for the study of neuronal activity during cognitive tasks
Assessment of brain connectivity among different brain areas during cognitive or motor tasks is a crucial problem in neuroscience today. Aim of this research study is to use neural mass models to assess the effect of various connectivity patterns in cortical EEG power spectral density (PSD), and …
Page 1 of 3