Study on the clinical application of pulsed DC magnetic technology for tracking of intraoperative head motion during frameless stereotaxy.

Head & Face Medicine
O SuessT Kombos

Abstract

Tracking of post-registration head motion is one of the major problems in frameless stereotaxy. Various attempts in detecting and compensating for this phenomenon rely on a fixed reference device rigidly attached to the patient's head. However, most of such reference tools are either based on an invasive fixation technique or have physical limitations which allow mobility of the head only in a restricted range of motion after completion of the registration procedure. A new sensor-based reference tool, the so-called Dynamic Reference Frame (DRF) which is designed to allow an unrestricted, 360 degrees range of motion for the intraoperative use in pulsed DC magnetic navigation was tested in 40 patients. Different methods of non-invasive attachment dependent on the clinical need and type of procedure, as well as the resulting accuracies in the clinical application have been analyzed. Apart from conventional, completely rigid immobilization of the head (type A), four additional modes of head fixation and attachment of the DRF were distinguished on clinical grounds: type B1 = pin fixation plus oral DRF attachment; type B2 = pin fixation plus retroauricular DRF attachment; type C1 = free head positioning with oral DRF; and type C2 = f...Continue Reading

References

Aug 1, 1995·Journal of Neurosurgery·J G GolfinosR F Spetzler
Jul 1, 1993·Journal of Neurosurgery·J KoivukangasJ Oikarinen
Jan 1, 1997·Computer Aided Surgery : Official Journal of the International Society for Computer Aided Surgery·R J BaleP H Lukas
Jan 5, 1999·IEEE Transactions on Medical Imaging·J M FitzpatrickC R Maurer
Oct 5, 2001·IEEE Transactions on Medical Imaging·J M Fitzpatrick, J B West
May 23, 2003·Minimally Invasive Neurosurgery : MIN·H TakeuchiH Itoh
Aug 2, 2003·Stereotactic and Functional Neurosurgery·Eric C LeuthardtJeffrey G Ojemann
Jun 24, 2005·RöFo : Fortschritte auf dem Gebiete der Röntgenstrahlen und der Nuklearmedizin·O SuessT Kombos

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Methods Mentioned

BETA
biopsies

Software Mentioned

ACCISS
ACCISS II
SPSS

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