Image-guided neurosurgery, or neuronavigation, has been used to visualise the location of a surgical probe by mapping the probe location to pre-operative models of a patient's anatomy. One common limitation of this approach is that it requires the surgeon to divert their attention away from the patient and towards the neuronavigation system. In order to improve this type of application, the aut...

Zur intraoperativen Resektionskontrolle ist der B-Mode Ultraschall (US) trotz breiter Verfügbarkeit und einfacher Anwendung aktuell auf Grund mangelnder Differenzierung von Tumor, Tumorgrenzen, Tumorödem und Tumorresten nur teilweise geeignet. Eine Lösung für dieses Problem könnte die Anwendung von Ultraschallkontrastmittel zur Tumordarstellung und Resektionskontrolle sein. Hierzu wurde bei 15 ...

Current brain deformation models have predominantly reflected solid constitutive relationships generated from empirical ex vivo data and have largely overlooked interstitial hydrodynamic effects. In the context of a technique to update images intraoperatively for image-guided neuronavigation, we have developed and quantified the deformation characteristics of a three-dimensional porous media fi...

Rules of geometry and stereomorphometry are often applied to narrow and deep neurosurgical approaches. Methods of research are based on the direct cadaver measurements, radiological analysis and intraoperative measurements. Newly developed devices allow direct morphometry to be performed in vivo, during the operation. We describe the use of the neuronavigation system Stealth Station by Medtroni...

This study is the first step in the effort for the use of three-dimensional (3D) printing in pediatric surgical planning by establishing effective collaboration between Ribeirao Preto Clinics Hospital (HCRP) and Renato Archer Center for Information Technology (CTI). The first printed biomodel can be used to support discussion and decision making, and neuronavigation before the surgery for train...

Image-guided surgery or neuronavigation has become an important part of the neurosurgical armamentarium in most centers around the world, primarily because it helps to improve patient safety and consistency of surgical results.1–5,8 However, these advantages come at the cost of increased health care and patient expenses. The disposable products used in image-guided surgery are often very costly...

Neuronavigation systems have become standard neurosurgical tool; however, there is a major concern to be solved. Brain shift occurs during surgery, which compromises the system’s accurate anatomical representation. We developed and evaluated a convenient new method for a rapid intraoperative correction of brain shift during neuronavigation. We assessed four patients (4 females; mean age 61.0 ye...

Everyday, neurosurgeons face the problem of orientation within the brain but the advent of stereotactic surgery and neuronavigation have solved this problem. Frame-based stereotactic systems (FBSS) and neuronavigation systems have their own strengths and priority and pitfalls, which were the main driving force for us to design a new system. This hybrid system comprises three main parts: main fr...

Minimally invasive techniques in neurosurgery evolved in two steps. Many minimally invasive concepts like neuronavigation, endoscopy, or frame based stereotaxy were developed by the pioneers of neurosurgery, but it took decades till further technical developments made the realization and broad clinical application of these early ideas safe and possible. This thesis will be demonstrated by givin...