Patent ID: 7742568
Filing Date: 2010-06-22
Classification: G01N,G01V

Abstract:
1. An apparatus for imaging an organic object contained within a metal enclosure, comprising: an x-ray source for producing an x-ray beam passing through said metal enclosure; a first beam filter for creating a low-energy x-ray spectrum; said first beam filter comprising an atomic element having a high k-edge energy; a second beam filter for creating a high-energy x-ray spectrum; a filter exchanger for alternately positioning said first beam filter and said second beam filter within said x-ray beam; an x-ray detector for measuring an intensity of said x-ray beam exiting said metal enclosure; a computer calculates a metal suppressed image from the x-ray beam intensity measurements using logarithmic subtraction; whereby the image of said organic object is isolated from the interference of said metal enclosure.