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. Author manuscript; available in PMC: 2008 Sep 29.
Published in final edited form as: J Vasc Interv Radiol. 2007 Sep;18(9):1141–1150. doi: 10.1016/j.jvir.2007.06.014

Figure 6.

Figure 6

(a) MPR of a preprocedural CT scan shows the target lesion (white arrow) with the virtual needle (black arrow) superimposed on the basis of the needle’s tracking position and registration immediately before a confirmation CT scan was obtained. (b) The same MPR in the confirmation scan shows the image of the 19-gauge tracked needle (white arrow) and the superimposed virtual needle (black arrow). The thick end of the needle in the CT scan of the needle indicates the location of the integrated 9 × 1-mm sensor coil. (c) Magnified image of the needle tip corresponding to the inset in b. The corresponding tracking error is indicated as the distance between the three-dimensional positions of the virtual needle tip and needle image.