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Method and apparatus for triggering image acquisition in a C-arm system by a rotary encoder

  • US 7,278,786 B2
  • Filed: 04/26/2004
  • Issued: 10/09/2007
  • Est. Priority Date: 05/06/2003
  • Status: Expired due to Fees
First Claim
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1. An imaging apparatus comprising:

  • a c-arm that rotates within a limited rotation angle range about an object to be imaged;

    a radiation source coupled to said c-arm, said radiation source projecting radiation onto a radiation detector in order to record projection data; and

    a plurality of rotation angle sensors, comprising one or more fixed angle sensors and one or more moving angle sensors, wherein a signal for recording of the projection data is generated when select rotation angle sensors align.

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