| US 7,587,022 B1 | ||
| Correlation-based motion estimation of object to be imaged | ||
| Jiang Hsieh, Brookfield, Wis. (US); Yuchuan Wei, Iowa City, Iowa (US); and Ge Wang, Iowa City, Iowa (US) | ||
| Assigned to General Electric Company, Schenectady, N.Y. (US); and University of Iowa Research Foundation, Iowa City, Iowa (US) | ||
| Filed on Mar. 23, 2006, as Appl. No. 11/277,243. | ||
| Int. Cl. A61B 6/00 (2006.01) | ||
| U.S. Cl. 378—8 [378/4] | 20 Claims |
| 1. An imaging system, comprising:
an x-ray source that emits a beam of x-rays toward an object to be imaged;
a detector that receives x-rays emitted by the x-ray source;
a data acquisition system (DAS) operably connected to the detector; and
a computer operably connected to the DAS and programmed to:
calculate object location parameters from a first object scan;
calculate object location parameters from a second object scan;
correlate the object location parameters from the first and second object scans;
estimate an amount of object motion that occurred during the second object scan based on the correlation;
correct projection data in the second object scan based on the estimate; and
generate an image of the object from the second object scan using the corrected projection data of the second scan.
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