Plural source computerized tomography device with improved resolution
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United States of America Patent
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Jan 13, 1987
Issued Date -
N/A
app pub date -
Jan 14, 1986
filing date -
Jul 28, 1983
priority date (Note) -
Expired
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Abstract
An apparatus for examining a body by means of penetrating radiation. The apparatus has a source of penetrating radiation for transmitting radiation through a body, and a detector array disposed to detect the radiation after passage through the body. Radiation beams emitted by the source traverse a plurality of paths through the body and are detected by the detector. The source has at least two distinct point sources for emitting radiation. The distinct point sources of radiation alternately emit radiation. The detector array can be a reduced array of detectors which subtends less than the full reconstruction circle diameter. A method is provided for increasing the spatial resolution in a CT scanner by increasing the sampling density by interleaving radiation beams emitted by the radiation source between adjacent radiation beams continuously as the source and detectors are rotated about the body.
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