Method for tube spit correction based on high voltage output
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United States of America Patent
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Oct 3, 2006
Grant Date -
Mar 3, 2005
app pub date -
Aug 28, 2003
filing date -
Aug 28, 2003
priority date (Note) -
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Abstract
The present invention provides a method to detect tube spits and to reduce spit related artifacts in a computed tomography imaging system. A way of detecting tube spit is to monitor the generator kilovolt or milliamp waveforms. Changes in kV waveform follow closely with those in offset-corrected projection data. If a tube-spit event is not detected, processing proceeds without tube spit correction. If a tube-spit event is detected, a tube spit correction is performed. The objective of tube-spit correction is to remove image artifacts due to the occurrence of a tube-spit event.
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