Scanned x-ray selective imaging system
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United States of America Patent
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-
Aug 11, 1987
Issued Date -
N/A
app pub date -
Nov 17, 1980
filing date -
Feb 5, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An x-ray beam is scanned through a sequence of subsections of a volume. At each position the x-ray transmission is measured at two energies. The resultant transmission signals are processed to produce a signal representing the projected amount of a specific material in the volume. The two energies are chosen so that the mass attenuation coefficients of bone and soft tissue are comparable to each other.
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