Browsing University of Waterloo by Subject "medical imaging"
Now showing items 1-12 of 12
-
Breast Cancer Detection Using Microwaves and Microwave-Thermography Techniques
(University of Waterloo, 2021-11-16)The accelerated growth in Microwave Imaging (MWI) and Microwave Detection (MWD) is driven by microwave ability to penetrate materials that are considered opaque at a shorter wavelength. This elevates MWI potential to ... -
Comparative Study and Analysis of THz Pulse and Continuous-wave Imaging towards Medical Application
(University of Waterloo, 2009-08-27)Until recently, there had been a gap between the output frequencies of electronic and optical sources, which included waves of frequencies around 300 GHz to 3 THz and was known as the Terahertz gap. After the development ... -
A Critical Examination of Two Specific Approaches Used to Characterize Medical Images: i) Projection-based Descriptors for Image Retrieval and ii) Estimating Fractal Dimensions of Discrete Sets
(University of Waterloo, 2022-08-31)In this thesis we provide a critical examination of two methods which are used to characterize medical images. Accordingly, this thesis is split into two main parts. First, we take a look at the problem of designing ... -
Developments Towards Chromophore-Selectivity in Photoacoustic Remote Sensing Microscopy
(University of Waterloo, 2022-04-28)Medical imaging serves to diagnose and monitor illnesses in clinical settings. Several modalities such as X-Ray and Ultrasound have become ubiquitous due to their high utility. Photoacoustic microscopy, based on the ... -
Device Architectures for Improved Temporal Response with Amorphous Selenium Radiation Detectors
(University of Waterloo, 2019-07-29)Amorphous selenium (a-Se) is a commercially mature direct conversion photoconductor capable of very high spatial resolution that enables the early detection of small and subtle lesions in breast cancer screening and ... -
Dynamic Magnetic Resonance Elastography
(University of Waterloo, 2010-01-20)Magnetic Resonance Elastography (MRE) is a medical imaging technique used to generate a map of tissue elasticity. The resulting image is known as an elastogram, and gives a quantitative measure of stiffness in the examined ... -
Indirect conversion amorphous selenium photodetectors for medical imaging applications
(University of Waterloo, 2014-01-22)The innovative design of flat panel volume computed tomography (CT) systems has recently led to the emergence of a wide spectrum of new applications for both diagnostic and interventional purposes, such as ultra-high ... -
Microwave Near-Field Imaging and Material Characterization
(University of Waterloo, 2020-03-27)In recent years, microwave imaging has attracted many researchers from various fields such as medical imaging, remote sensing, and industrial ones because of its high degree of penetration, non-ionizing and safe nature, ... -
Mutual Information Based Methods to Localize Image Registration
(University of Waterloo, 2005)Modern medicine has become reliant on medical imaging. Multiple modalities, e. g. magnetic resonance imaging (MRI), computed tomography (CT), etc. , are used to provide as much information about the patient as ... -
Photon Quantum Noise Limited Pixel and Array architectures in a-Si Technology for Large Area Digital Imaging Applications
(University of Waterloo, 2011-08-31)A Voltage Controlled Oscillator (VCO) based pixel and array architecture is reported using amorphous silicon (a-Si) technology for large area digital imaging applications. The objectives of this research are to (a) demonstrate ... -
Segmentation of 3D Carotid Ultrasound Images Using Weak Geometric Priors
(University of Waterloo, 2010-10-29)Vascular diseases are among the leading causes of death in Canada and around the globe. A major underlying cause of most such medical conditions is atherosclerosis, a gradual accumulation of plaque on the walls of blood ... -
Set Representation Learning: A Framework for Learning Gigapixel Images
(University of Waterloo, 2021-09-13)In Machine Learning, we often encounter data as a set of instances such Point Clouds (set of x,y, and z coordinates), patches from gigapixel images (Digital Pathology, Satellite Imagery, Astronomical Images, etc.), Weakly ...