Spot-size effect reduction
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United States of America Patent
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Aug 26, 2008
Grant Date -
Nov 9, 2006
app pub date -
May 6, 2005
filing date -
May 6, 2005
priority date (Note) -
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Abstract
A radiographic imaging device includes an X-ray source having a finite focal spot characterized by a determined intensity distribution. The X-ray source emits a beam of X-ray radiation toward an object. A detector assembly receives at least part of the X-ray radiation after it passes through the object. The detector assembly produces a signal in response to the received radiation. An image processor constructs an image from the signal generated by the detector assembly using the determined intensity distribution of the X-ray source. By inverse filtering the aggregated detector image from the detector assembly, the effects of the finite focal spot size of the X-ray source are mitigated, improving the quality of the resulting image.
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