A
system for use during a medical or surgical procedure on a body. The
system generates an image representing the position of one or more body elements during the procedure using scans generated by a
scanner prior or during the procedure. The image
data set has reference points for each of the body elements, the reference points of a particular body element having a fixed
spatial relation to the particular body element. The
system includes an apparatus for identifying, during the procedure, the relative position of each of the reference points of each of the body elements to be displayed. The system also includes a processor for modifying the image
data set according to the identified relative position of each of the reference points during the procedure, as identified by the identifying apparatus, said processor generating a displaced image
data set representing the position of the body elements during the procedure. The system also includes a display utilizing the displaced image data set generated by the processor, illustrating the relative position of the body elements during the procedure. Methods relating to the system are also disclosed. Also disclosed are devices for use with a surgical
navigation system having a
sensor array which is in communication with the device to identify its position. The device may be a
reference frame for attachment of a body part of the patient, such as a cranial reference arc frame for attachment to the head or a spine reference arc frame for attachment to the spine. The device may also be a localization frame for positioning an instrument relative to a body part, such as a localization
biopsy guide frame for positioning a
biopsy needle, a localization
drill guide
assembly for positioning a
drill bit, a localization
drill yoke
assembly for positioning a drill, or a ventriculostomy probe for positioning a
catheter.