Image Overlay Guidance for Needle Insertion in CT Scanner

G. Fichtinger, A. Deguet, K. Masamune, E. Balogh, G.S. Fischer, H. Mathieu, R.H. Taylor, S.J. Zinreich, L.M. Fayad
2005 IEEE Transactions on Biomedical Engineering  
We present an image overlay system to aid needle insertion procedures in CT scanners. The device consists of a display and a semitransparent mirror that is mounted on the gantry. Looking at the patient through the mirror, the CT image appears to be floating inside the patient with correct size and position, thereby providing the physician with two-dimensional "X-ray vision" to guide needle insertions. The physician inserts the needle following the optimal path identified in the CT image
more » ... he CT image rendered on the display and thus reflected in the mirror. The system promises to reduce X-ray dose, patient discomfort, and procedure time by significantly reducing faulty insertion attempts. It may also increase needle placement accuracy. We report the design and implementation of the image overlay system followed by the results of phantom and cadaver experiments in several clinical applications.
doi:10.1109/tbme.2005.851493 pmid:16119237 fatcat:lb5qlggzmfdzhbcrko7uhruppe