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Cone beam CT scanning

  • US 8,964,934 B2
  • Filed: 04/25/2013
  • Issued: 02/24/2015
  • Est. Priority Date: 04/25/2013
  • Status: Expired due to Fees
First Claim
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1. A cone beam computerized tomography (CBCT) system comprising:

  • a radiation source for emitting a cone beam of radiation in a beam direction towards an object;

    a detector for detecting said cone beam of radiation;

    a positioner for moving said radiation source and said object according to a scanning trajectory; and

    a controller in communication with said positioner, said controller operable to operate said radiation source according to a sampling pattern that includes intersections of the scanning trajectory and a reconstruction trajectory,wherein motion of said radiation source is substantially confined to a spherical shell, and wherein said positioner is operable to move said radiation source at speed higher than a highest speed of the object by a factor of at least 10, and wherein a largest angular discrepancy between any vector in a range of the scanning trajectory and a nearest sample of the scanning trajectory does not exceed 10°

    .

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