X-ray or gamma ray systems or devices – Source support – Including movable source
Reexamination Certificate
2006-09-19
2006-09-19
Bruce, David V. (Department: 2882)
X-ray or gamma ray systems or devices
Source support
Including movable source
C378S146000
Reexamination Certificate
active
07108421
ABSTRACT:
An imaging apparatus and related method comprising a source that projects a beam of radiation in a first trajectory; a detector located a distance from the source and positioned to receive the beam of radiation in the first trajectory; an imaging area between the source and the detector, the radiation beam from the source passing through a portion of the imaging area before it is received at the detector; a detector positioner that translates the detector to a second position in a first direction that is substantially normal to the first trajectory; and a beam positioner that alters the trajectory of the radiation beam to direct the beam onto the detector located at the second position. The radiation source can be an x-ray cone-beam source, and the detector can be a two-dimensional flat-panel detector array. The invention can be used to image objects larger than the field-of-view of the detector by translating the detector array to multiple positions, and obtaining images at each position, resulting in an effectively large field-of-view using only a single detector array having a relatively small size. A beam positioner permits the trajectory of the beam to follow the path of the translating detector, which permits safer and more efficient dose utilization, as generally only the region of the target object that is within the field-of-view of the detector at any given time will be exposed to potentially harmful radiation.
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Grant Richard K.
Gregerson Eugene A.
Johnson Norbert
Breakaway Imaging, LLC
Bruce David V.
Hamilton Brook Smith & Reynolds P.C.
Song Hoon
LandOfFree
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