Abstract: X-ray imaging screens utilizing phosphors disposed in microchannels disposed in a plate. This application relates to the “tiling” of such microchannel plates to form a larger imaging area and to the use of “storage phosphors” in the microchannel plates which enables the phosphors to be read out after exposure and from the side exposed to the X-rays. The storage phosphor screens of the present invention provide significantly increased resolution than the prior art storage phosphor screens.
Type:
Grant
Filed:
February 11, 2002
Date of Patent:
April 26, 2005
Assignee:
Nanocrystal Imaging Corporation
Inventors:
Nikhil R. Taskar, Rameshwar Nath Shargava
Abstract: X-ray imaging screens utilizing phosphors disposed in microchannels disposed in a plate. This application relates to the “tiling” of such microchannel plates to form a larger imaging area and to the use of “storage phosphors” in the microchannel plates which enables the phosphors to be read out after exposure and from the side exposed to the X-rays. The storage phosphor screens of the present invention provide significantly increased resolution than the prior art storage phosphor screens.
Type:
Application
Filed:
February 11, 2002
Publication date:
June 20, 2002
Applicant:
Nanocrystal Imaging Corporation
Inventors:
Nikhil R. Taskar, Rameshwar Nath Shargava
Abstract: A composite phosphor screen for converting radiation, such as X-rays, into visible light. The screen includes a planar surface, which can be formed from glass, silicon or metal, which has etched therein a multiplicity of closely spaced microchannels having diameters of the order of 10 microns or less. Deposited within each of the microchannels is a multiplicity of phosphors which emit light when acted upon by radiation. The walls of the microchannels and/or the substrate surfaces include light reflective coatings so as to reflect the light emitted by the phosphors to the light collecting devices, such as film or an electronic detector. The coatings can be either radiation transparent or filtering/attenuating depending on the particular application.
Type:
Grant
Filed:
November 20, 1998
Date of Patent:
October 9, 2001
Assignee:
Nanocrystal Imaging Corporation
Inventors:
Rameshwar Nath Bhargava, Nikhil R. Taskar, Vishal Chhabra, John Victor D. Veliadis