Apparatus for and method of generating an enhanced contrast information digital image
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United States of America Patent
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Issued Date -
Oct 24, 2002
app pub date -
Apr 9, 2002
filing date -
Apr 24, 2001
priority date (Note) -
Abandoned
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Abstract
A digital x-ray imaging system has a digital image generator with an x-ray source for irradiating a subject with a radiation beam and a data acquisition system located to detect the radiation after its interaction with the subject, to generate an image of the subject and to emit a digital data set representing the image. A digital image processor is connected to the digital image generator to receive first and second digital data sets respectively representing images obtained at different first and second exposure levels. The processor is configured to generate a third digital data set which when reconstructed provides an enhanced contrast information digital image. The third didgital data set is formed by data extracted from each of the first and the second digital data sets selected as representing regions of different radiation absorbency of the subject, dependent on the respective first and second exposure levels.
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