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Extremity imaging apparatus for cone beam computed tomography
专利权人:
John Yorkston
发明人:
John Yorkston,Robert J. Asento,Jeffrey H. Siewerdsen,David H. Foos
申请号:
US14266861
公开号:
US08998486B2
申请日:
2014.05.01
申请国别(地区):
US
年份:
2015
代理人:
摘要:
An apparatus for cone beam computed tomography of an extremity has a digital radiation detector and a first device to move the detector along a circular detector path extending so that the detector moves both at least partially around a first extremity of the patient and between the first extremity and a second, adjacent extremity. The detector path has radius R1 sufficient to position the extremity approximately centered in the detector path. There is a radiation source with a second device to move the source along a concentric circular source path having a radius R2 greater than radius R1, radius R2 sufficiently long to allow adequate radiation exposure of the first extremity for an image capture by the detector. A first circumferential gap in the source path allows the second extremity to be positioned in the first circumferential gap during image capture.
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