Ultrasound (US) systems equipped with position sensors can acquire three-dimensional spatial data allowing registration with previously acquired magnetic resonance (MR) imaging for fused real-time sonographic imaging. Co-registration and fusion of alignment involves sequential algorithmic transformations minimizing the error between the output and target image. An electromagnetic field generator is used to track transducer orientation to simultaneously map real-time US with corresponding anatomy on pre-acquired MR. The potential utility of this technology in the treatment of various pain syndromes in particular certain joint, tendon and perineural therapies will be described.
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