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Respiratory gated image fusion of computed tomography 3D images and live fluoroscopy images

  • US 7,467,007 B2
  • Filed: 05/16/2006
  • Issued: 12/16/2008
  • Est. Priority Date: 05/16/2006
  • Status: Expired due to Fees
First Claim
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1. A method for providing real-time image guidance in an image-guided medical procedure, the method comprising:

  • (a) constructing, in a pre-operative stage of said procedure, a fused image comprising a single image of a computer tomography (CT) generated anatomical 4D data set of a patient'"'"'s region of operative interest with a static fluoroscopic image of said patient'"'"'s region of operative interest;

    (b) acquiring, in an operative stage of said procedure, a live fluoroscopic image of said patient'"'"'s region of operative interest;

    (c) acquiring, in said operative stage, an operative respiratory gating signal of the patient, substantially coincident with said step (b); and

    (d) triggering, in said operative stage, the fused image, obtained at said step (a), with the live fluoroscopic image, obtained at said step (b) by the real-time respiratory gating signal, obtained at said step (c) to generate a real-time fused, and triggered image of said patient'"'"'s region of operative interest;

    wherein the fused and triggered image provides real-time image guidance during said image-guided medical procedure by displaying a medical device in real time to ensure a safer and more efficient interventionwherein the constructing step (a) further comprisesacquiring a pre-operative respiratory gating signal of the patient'"'"'s respiratory movement, at substantially a point in time when the monitored respiratory signal reaches a preset phase of respiration;

    acquiring an anatomical 3D data set of a patient'"'"'s region of operative interest;

    constructing an anatomical 4D data set from the acquired anatomical 3D data set;

    acquiring a static fluoroscopic image of said patient'"'"'s region of operative interest;

    selecting a single frame from the anatomical 4D data set as an optimal image; and

    statically fusing the selected single frame from the anatomical 4D data set with the acquired static fluoroscopic image.

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