Intraoperative brain deformation (brain shift) induces a decrease in accuracy of neuronavigation systems during surgery. In order to compensate for occurring deformation of brain tissue, registration of time-shifted MR image sequences has to be conducted. In this paper we present a practical application of a novel approach for non-linear registration of medical images. The algorithm has been al...

In this paper we present a methodology to adress the problem of brain tissue deformation referred to as ”brainshift”. This deformation occurs throughout a neurosurgery intervention and strongly alters the accuracy of the neuronavigation systems used to date in clinical routine which rely solely on preoperative patient imaging to locate the surgical target, such as a tumour or a functional area....

A 56-year-old man underwent a septoplasty 20 years ago; however, one month prior to hospitalization he got a bad cold and cough, followed by a watery rhinorrhea. Computed tomography (CT) scan showed a defect in the right planum sphenoidale. After admission, with the typical clinic symptoms, the history of septoplasty and imageology evidence, the patient was diagnosed as delayed CSF rhinorrhea, ...

The authors describe a newly developed expandable cannula to enable a more efficient use of an endoscope in removing intraparenchymal spontaneous hypertensive intracerebral hematomas. The cannula is introduced like a conventional brain cannula, using neuronavigation techniques to reach the targeted hematoma accurately, and, once deployed, conventional microsurgical techniques are used under dir...