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System to stabilize an irradiated internal target

DC
  • US 6,118,848 A
  • Filed: 01/06/1999
  • Issued: 09/12/2000
  • Est. Priority Date: 01/14/1998
  • Status: Expired due to Term
First Claim
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1. A stabilizing system comprising:

  • markers, the markers being located in a body, and the markers having a reference set of positions relative to external coordinates, the reference set of positions having a calibrated spatial relationship to a target volume in the body;

    an imager which images the markers and produces a initial imager output signal which is functionally related to an initial set of positions of the markers relative to the external coordinates at an initial time and produces a subsequent imager output signal which is functionally related to a subsequent set of positions relative to the external coordinates at a subsequent time;

    a data processor which receives the initial imager output signal, receives the subsequent imager output signal, compares the initial imager output signal with the subsequent imager output signal, and produces a control output signal;

    an actuator sub-system, the actuator sub-system being connected to the body, and the actuator sub-system being driven by the control output signal to move the body.

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