Multi-step contrast sensitivity gauge
| DWPI Title: X-ray contrast sensitivity gauge for X-ray system, e.g., for weapons inspection, has thickness between top and bottom faces of second step which is greater than thickness between top and bottom faces of first step |
| Abstract: An X-ray contrast sensitivity gauge is described herein. The contrast sensitivity gauge comprises a plurality of steps of varying thicknesses. Each step in the gauge includes a plurality of recesses of differing depths, wherein the depths are a function of the thickness of their respective step. An X-ray image of the gauge is analyzed to determine a contrast-to-noise ratio of a detector employed to generate the image. |
| Use: X-ray contrast sensitivity gauge for characterizing contrast-to-noise ratio of detector in X-ray system (claimed) used in, e.g., in inspection systems that are outside of medical imaging field to generate images of relatively thick materials for alterations in density and/or faults that may exist in such materials or to obtain images of systems that are enclosed with a relatively thick enclosure, such as a motor casing or weapons casing. |
| Advantage: Image can be analyzed to ascertain a contrast-to-noise ratio for the multi-step contrast sensitivity gauge at desired thicknesses and recess depths. |
| Novelty: The X-ray contrast sensitivity gauge (200) has a first step (202) and a second step (204). Each step has a planar top face (206,216) and a planar bottom face (208) parallel to each other. The bottom face of the first step is coplanar with the bottom face of the second step. The thickness between the top and bottom faces of the second step is greater than the thickness between the top and bottom faces of the first step. The top face of each step has recesses (210-214,218-222) of differing depths. |
| Filed: 9/23/2011 |
| Application Number: US13241569A |
| Tech ID: SD 12030.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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