Apparatus and method for interactive 3D registration of ultrasound and magnetic resonance images based on a magnetic position sensor

  • US 6,775,404 B1
  • Filed: 03/15/2000
  • Issued: 08/10/2004
  • Est. Priority Date: 03/18/1999
  • Status: Expired due to Fees
First Claim
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1. A method, comprising:

  • registering a coordinate space associated with images of a first modality to a coordinate space of a magnetic position sensor, to obtain a first transformation;

    registering a coordinate space associated with images of a second modality to the coordinate space of the magnetic position sensor, to obtain a second transformation; and

    converting coordinates of images associated with one of the modalities to coordinates of images associated with the other one of the modalities based on the first and second transformations, wherein the magnetic position sensor comprises a receiver and a transmitter, the method further comprising;

    transforming the coordinate space associated with images of the second modality to a coordinate space of the receiver;

    transforming the coordinate space of the receiver to a coordinate space of the transmitter; and

    transforming the coordinate space of the transmitter to the coordinate space associated with images of the first modality.

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