X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Reexamination Certificate
2006-08-01
2006-08-01
Bruce, David V. (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
C378S004000
Reexamination Certificate
active
07085342
ABSTRACT:
The present invention relates to a method for tracking motion phase of an object. A plurality of projection data indicative of a cross-sectional image of the object is received. The projection data are processed for determining motion projection data of the object indicative of motion of the object based on the attenuation along at least a same line through the object at different time instances. A motion phase of the object with the object having the least motion is selected. Finally, projection data acquired at time instances within the selected motion phase of the object are selected for tomographical image reconstruction. Reconstructed images clearly show a substantial improvement in image quality by successfully removing motion artifacts using the method for tracking motion phase of an object according to the invention. The method is highly beneficial in cardiac imaging using X-ray CT scan.
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Stergiopoulos Storgios
Younis Waheed
Bruce David V.
Canamet Canadian National Medical Technologies Inc
Freedman & Associates
Song Hoon
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