81 |
High resolution phase contrast x-ray radiographyArhatari, Benedicta Dewi January 2006 (has links) (PDF)
The conventional approach for x-ray radiography is absorption contrast. In recent years a new approach that eliminates the usual requirement for absorption and allows the visualization of phase based on refractive index features in a material has been demonstrated. This so-called “phase contrast imaging” has now been applied using a wide range of radiation and samples. In this work we are motivated by the need to find optimal conditions for achieving high quality phase contrast images. We consider image formation using the free space propagation of x-rays from a point source passing through a sample. This imaging model is a lens-less configuration and, as such, is very useful for x-ray wavelengths where lenses are difficult to fabricate. Although no lenses are used, image magnification is still achieved due to the expansion of the wavefront as it propagates from the point source illumination. The short wavelength and penetrating power of x-rays make them ideal for non-destructive studies of microscopic samples. However, these techniques are also important for investigating larger, non-microscopic samples.
|
82 |
Water-soluble contrast media and the brain interfaces /Sage, M. R. January 1983 (has links) (PDF)
Thesis (M.D.)--University of Adelaide, Dept. of Surgery, 1984. / Some mounted ill. Includes bibliographical references (leaves 147-194).
|
83 |
The effect of saccades on visual sensitivity and time perception /Diamond, Mark R. January 2002 (has links)
Thesis (Ph.D.)--University of Western Australia, 2003.
|
84 |
Biotinylated MRI contrast agents for molecular targeting /Castillo-Muzquiz, Aminta. January 2008 (has links)
Thesis (Ph.D.)--University of Texas at Dallas, 2008. / Includes vita. Includes bibliographical references (leaves 150-158)
|
85 |
Magnetic resonance imaging of perfused rat hearts using the ph-responsive agent GdDOTA-4AmP /Lubag, Angelo Josue M., January 2005 (has links)
Thesis (Ph.D.)--University of Texas at Dallas, 2005. / Includes vita. Includes bibliographical references.
|
86 |
Novel contrast agents for magnetic resonance imagingCheung, Shing-chung. January 2009 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2009. / Includes bibliographical references (leaves 89-116). Also available in print.
|
87 |
Lanthanide complexes for magnetic resonance imaging (MRI) contrast agentsTong, Pui-ling. January 2001 (has links)
Thesis (Ph.D.)--University of Hong Kong, 2001. / Includes bibliographical references. Also available in print.
|
88 |
Visual acuity with lights of different colors and intensitiesRice, David Edgar, January 1900 (has links)
Issued also as author's dissertation. / Columbia contributions to philosophy and psychology, vol. XX, no. 2.
|
89 |
The effect of tinted lenses on colour discrimination and contrast sensitivityRamkissoon, Prithipaul 27 October 2008 (has links)
M. Phil. / Please refer to full text to view abstract / Prof. J.T. Ferreira
|
90 |
Investigations of visual function in migraine by visual evoked potentials and visual psychophysical testsKhalil, Nofal Mohammed January 1991 (has links)
No description available.
|
Page generated in 0.0591 seconds