Abstract
Epidural anesthesia is a common but challenging procedure in obstetrics and surgery, especially for the obese patient. An ultrasound guidance system is proposed using a transducer-mounted camera to create 3D panorama images of the spine relative to markings on the skin. Guidance will include identification of individual vertebrae, and selection of a suitable puncture site, trajectory and depth of needle insertion. This study describes the panorama creation and preliminary testing. The camera tracks the transducer movement using a specialized strip of markers attached to the skin surface, which enables absolute position estimation of the transducer with respect to the patient over the full range of the spine. The 3D panorama image can then be resliced in various parasagittal planes to show either the target epidural spaces or the laminae. The geometric accuracy of the panoramas are validated against an optical tracking system and independent measurements by a sonographer.
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Rafii-Tari, H., Abolmaesumi, P., Rohling, R. (2011). Panorama Ultrasound for Guiding Epidural Anesthesia: A Feasibility Study. In: Taylor, R.H., Yang, GZ. (eds) Information Processing in Computer-Assisted Interventions. IPCAI 2011. Lecture Notes in Computer Science, vol 6689. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-21504-9_17
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DOI: https://doi.org/10.1007/978-3-642-21504-9_17
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