Abstract:
BACKGROUND:Brain-shift is a major source of error in neuronavigation systems based on pre-operative images. In this paper, we present intra-operative correction of brain-shift using 3D ultrasound. METHODS:The method is based on image registration of vessels extracted from pre-operative MRA and intra-operative power Doppler-based ultrasound and is fully integrated in the neuronavigation software. RESULTS:We have performed correction of brain-shift in the operating room during surgery and provided the surgeon with updated information. Here, we present data from seven clinical cases with qualitative and quantitative error measures. CONCLUSION:The registration algorithm is fast enough to provide the surgeon with updated information within minutes and accounts for large portions of the experienced shift. Correction of brain-shift can make pre-operative data like fMRI and DTI reliable for a longer period of time and increase the usefulness of the MR data as a supplement to intra-operative 3D ultrasound in terms of overview and interpretation.
journal_name
Acta Neurochir (Wien)journal_title
Acta neurochirurgicaauthors
Reinertsen I,Lindseth F,Askeland C,Iversen DH,Unsgård Gdoi
10.1007/s00701-014-2052-6subject
Has Abstractpub_date
2014-07-01 00:00:00pages
1301-10issue
7eissn
0001-6268issn
0942-0940journal_volume
156pub_type
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journal_title:Acta neurochirurgica
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