Dynamic computed tomography imaging using positional state modeling
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United States of America Patent
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Jun 6, 2006
Grant Date -
Jan 9, 2003
app pub date -
Jun 25, 2002
filing date -
Jun 28, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus for computed tomography (CT) imaging of a cyclically moving organ includes a positional state monitor (24, 40) that monitors a positional state of the cyclically moving organ such as the heart. A cone-beam CT scanner (10) acquires image data at least within a plurality of time windows. Each time window is centered about an occurrence of a selected positional state of the organ. A window analyzer (38) selects a data segment within each time window such that the data segments combine to form a complete data set covering a selected angular range. A reconstruction processor (44) reconstructs the selected data segments into an image representation.
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