X-ray or gamma ray systems or devices – Specific application – Absorption
Reexamination Certificate
2007-07-17
2007-07-17
Glick, Edward J. (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Absorption
C378S022000
Reexamination Certificate
active
11181339
ABSTRACT:
A 4-dimensional digital tomosynthesis system includes an x-ray source, an x-ray detector and a processor. The x-ray source is suitable for emitting x-ray beams to an object with a periodic motion. The periodic motion is divided into (n+1) time intervals, n being a positive integer. Each of the (n+1) time intervals is associated with a time instance ti, i=0, 1, 2, . . . , n. The x-ray detector is coupled to the x-ray source for acquiring projection radiographs of the object at each time instance tifor each scan angle based on the x-ray beams. The processor is communicatively coupled to the x-ray source and the x-ray detector for controlling the x-ray source and processing data received from the x-ray detector such that all projection radiographs acquired from all scan angles for each time instance tiare reconstructed and (n+1) sets of cross sections of the object are obtained. The cross section is either a coronal cross section or a sagittal cross section. Each of the (n+1) sets of cross sections is for a different time instance ti.
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Bani-Hashemi Ali
Pang Geordi G.
Rowlands John Alan
Corbett John M.
Glick Edward J.
Siemens Medical Solutions USA , Inc.
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