Two improved defocus quantitative phase imaging methods: discussion

Phase imaging from defocus information in a light field

Optical microscopy is without a doubt an essential component of life science research, but many objects of interest in biology are transparent. Chemical or immunological dyes, which can often be toxic, fluorescent transgenes, which require a protocol for transformation of exogenous DNA, and phase contrast, which inextricably combines phase information with amplitude, all serve to increase the c...

Quantitative Phase Imaging

Determination of cristobalite phase content in ceramic cores using various X-ray quantitative phase analysis methods

The aim of this research is to investigate different X-ray based quantitative phase analysis methods for determination of cristobalite phase content in ceramic cores. For this purpose, four popular routes including peak absolute intensity method, relative intensity ratio method, direct or calibration method and internal standard (or Alexander-Klug) method have been chosen. Some control samples ...

Quantitative Phase Shift Variance Imaging

Molecular ultrasound imaging is based on the detection of contrast agents (microbubbles) targeted to disease specific receptors in the vasculature. By quantifying the amount of the adherent microbubbles a change in the expression of these receptors and thus the disease development can be assessed. Quantification of microbubbles from ultrasound images in vivo was thus far mainly performed by ana...

Registration Methods for Quantitative Imaging

Title of Dissertation: REGISTRATION METHODS FOR QUANTITATIVE IMAGING Gustavo Kunde Rohde, Doctor of Philosophy, 2005 Dissertation directed by: Professor Carlos A. Berenstein and Professor Dennis M. Healy Jr. Department of Mathematics At the core of most image registration problems is determining a spatial transformation that relates the physical coordinates of two or more images. Registration m...