A method for the assessment of time-varying brain shift during navigated epilepsy surgery

E. De Momi, G. Ferrigno, G. Bosoni, P. Bassanini, P. Blasi, G. Casaceli, D. Fuschillo, L. Castana, M. Cossu, G. Lo Russo, F. Cardinale
<span title="2015-07-17">2015</span> <i title="Springer Nature"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/ohr6juw5xrcrzgnsati6eq3edq" style="color: black;">International Journal of Computer Assisted Radiology and Surgery</a> </i> &nbsp;
Purpose Image guidance is widely used in neurosurgery. Tracking systems (neuronavigators) allow registering the preoperative image space to the surgical space. The localization accuracy is influenced by technical and clinical factors, such as brain shift. This paper aims at providing quantitative measure of the time-varying brain shift during open epilepsy surgery, and at measuring the pattern of brain deformation with respect to three potentially meaningful parameters: craniotomy area,
more &raquo; ... my orientation and gravity vector direction in the images reference frame. Methods We integrated an image-guided surgery system with 3D Slicer, an open-source package freely available in the Internet. We identified the preoperative position of several cortical features in the image space of 12 patients, inspecting both the multiplanar and the 3D reconstructions. We subsequently repeatedly tracked their position in the surgical space. Therefore, we measured the cortical shift, following its time-related changes and estimating its correlation with gravity and craniotomy normal directions. Results The mean of the median brain shift amount is 9.64 mm (SD = 4.34 mm). The brain shift amount resulted not correlated with respect to the gravity direction, the craniotomy normal, the angle between the gravity and the craniotomy normal and the craniotomy area. Conclusions Our method, which relies on cortex surface 3D measurements, gave results, which are consistent with liter-B E. De Momi ature. Our measurements are useful for the neurosurgeon, since they provide a continuous monitoring of the intraoperative sinking or bulking of the brain, giving an estimate of the preoperative images validity versus time.
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/s11548-015-1259-1">doi:10.1007/s11548-015-1259-1</a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pubmed/26183148">pmid:26183148</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/yg2jpitz4vd37hmivbm6ook7vy">fatcat:yg2jpitz4vd37hmivbm6ook7vy</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20180723112925/https://re.public.polimi.it/retrieve/handle/11311/961591/154191/A%20method%20for%20the%20assessment%20of%20time-varying%20brain%20shift%20during.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/6c/a5/6ca56b95f2e9a7388532c1ad09dd5bd17ab23356.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/s11548-015-1259-1"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> springer.com </button> </a>