Image guiding and tracking method based on prediction

Image guiding and tracking method based on prediction

  • CN 101,628,154 A
  • Filed: 07/16/2008
  • Published: 01/20/2010
  • Est. Priority Date: 07/16/2008
  • Status: Active Application
First Claim
Patent Images

1. the image guiding and tracking method based on prediction is characterized in that, comprises following content and step:

  • (1) input;

    the image sequence I (k) of tumor anatomical structure, breathing state feature set R (k);

    (2) set up the state relation data base, comprising;

    the image sequence I (k) of tumor anatomical structure, tumor aspect graph be as sequence D (k), breathing state feature set R (k), makes that T is length normal period, and above-mentioned four kinds of status datas are according to phase sequence k=k for the moment 1, k 2... k TSet up related;

    (3) obtain t=t in the treatment iReal time imaging f (the t of moment dynamic tumor i) and breathing state feature R (t i);

    (4) by forecast model, the breathing state feature R (t behind the prediction time-delay Δ

    t i+ Δ

    t);

    And in tumor form image sequence D (k), determine R (t i+ Δ

    t) the image sequence D (k in Dui Ying tumor metamorphosis interval j

    )~

    D (k j+ α

    ), k j

    1 ..., K};

    (5) with real time imaging f (t i) with the image sequence in tumor metamorphosis interval, in region of interest, carry out registration one by one;

    (6) from registration results, select the best tumor aspect graph of a width of cloth as D (k j+ m), m ∈

    [k j

    , k j+ α

    ], represent t i+ Δ

    t tumor form constantly;

    (7) t is described in output i+ Δ

    t is the image I (k of tumor anatomical structure constantly j+ m).

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