Abstract: In particular embodiments, the present disclosure provides systems and methods for imaging a subject using radiation emitted from a laser produced plasma generating by irradiating a target with a laser. In particular examples, the target includes at least one radiation enhancing component, such as a fluor, cap, or wire. In further examples, the target has a metal layer and an internal surface defining an internal apex, the internal apex of less than about 15 ?m, such as less than about 1 ?m. The targets may take a variety of shapes, including cones, pyramids, and hemispheres. Certain aspects of the present disclosure provide improved imaging of a subject, such as improved medical images of a radiation dose than typical conventional methods and systems.
Type:
Grant
Filed:
April 5, 2007
Date of Patent:
June 30, 2009
Inventors:
Nathalie Renard-Le Galloudec, Thomas E. Cowan, Yasuhiko Sentoku, Jennifer Rassuchine
Abstract: Methods and apparatus for measuring the dielectric relaxation properties of a sample are disclosed. Methods are disclosed for amplifying or controlling the dielectric relaxation properties of a sample by adding particles, such as functionally coated particles. In certain methods, the particles amplify or control the dielectric relaxation properties of the sample by interacting with counter ions in the sample. In some embodiments, the methods use a dielectric relaxation spectroscopy apparatus with remote electrodes.
Type:
Grant
Filed:
May 11, 2005
Date of Patent:
April 7, 2009
Assignee:
Board of Regents of the University and College System of Nevada, on Behalf of the University of Nevada, Reno
Inventors:
Nelson George Publicover, Craig A. Vincze