Broadband photorefractive interferometer system for full field imaging of periodic and transient displacement fields KU Leuven
In order to ...
Glaucoma is an irreversible neurodegenerative disease which mainly damages the optical nerve part of human eye progressively. Worldwide, nearly 60 million people are affected by glaucoma, where around 90% of these people are from the low- and middle-income countries. And this number is expected to raise above 111 million worldwide by 2040. The prevalence of glaucoma is very high in low-income countries like Ethiopia, compared with the ...
The objective of this PhD is to develop an inverse method for the quantification of imprecise random fields, based on full-field strain measurements (Digital Image Correlation (DIC)). A physics-informed deep-learning architecture (e.g., an intelligent combination of a convolutional/recurrent Neural Networks or deep Gaussian process with the governing physical equations) is trained to predict imprecise random-field descriptors (covariance ...
X-ray fluorescence (XRF) spectroscopy provides qualitative and quantitative information on the elemental composition of a sample by illuminating it with X-rays and monitoring the emitted characteristic radiation.1, 2 X-ray absorption spectroscopy (XAS) provides information on the local chemical structure of an element of interest in a sample by tuning the primary X-ray beam energy over an absorption edge of the element of interest, and ...
Talbot-Lau interferometry (TLI) is a recent innovation, that enables x-ray phase-contrast measurements using conventional x-ray tubes and detectors. This development allows clinical implementation of phase-contrast imaging. This had been anticipated for years, given the increased sensitivity of x-ray phase to variation in soft tissue density. Carestream Health engineered a prototype system, the CH-TLI setup, and this PhD work studied the ...
In conventional high-resolution X-ray computed tomography (micro-CT), the internal and external morphology of an object or patient can be determined in 3D. This is a very powerful and very common technique in medicine, but also in material science, geology, biomedicine, etc. it is becoming increasingly popular. However, a conventional CT scan measures the local X-ray linear attenuation coefficient which often doesn’ provide sufficient ...