Volumetric Intraoperative Brain Deformation Compensation: Model Development and Phantom Validation

Three-dimensional Optical Flow Method for Measurement of Volumetric Brain Deformation from Intraoperative Magnetic Resonance Images

Quantifying the intraoperative brain deformation using interventional MR imaging

The increasing use of image guided surgery systems for neurosurgery has lead to considerable recent interest in quantifying brain deformation during neurosurgery, Traditional image guided neurosurgery systems determine the rigid body transformation between pre-operative images and an intraoperative coordinate system (eg.: defined by an optical localiser). These systems can be very accurate, esp...

Model-driven brain shift compensation

Surgical navigation systems provide the surgeon with a display of preoperative and intraoperative data in the same coordinate system. However, the systems currently in use in neurosurgery are subject to inaccuracy caused by intraoperative brain deformation (brain shift), since they typically assume that the intracranial structures are rigid. Experiments show brain shift of up to 1 cm, making it...

A Stereo-Guided Biomechanical Model for Volumetric Deformation Analysis

A framework for soft tissue deformation recovery is presented and tested on both simulated and real data. The core of the approach is a volumetric deformable model based on the biomechanics of the material. Often, e.g. in medical applications, the deformation is very complex and dependent on many factors. In such cases, in order to reliably estimate the deformation, the model has to be guided b...

Doppler Ultrasound Driven Biomechanical Model of the Brain for Intraoperative Brain-Shift Compensation: A Proof of Concept in Clinical Conditions

Accurate localization of the target is essential to reduce morbidity during brain tumor removal interventions. Yet, image-guided neurosurgery faces an important issue for large skull openings where brain soft-tissues can exhibit large deformations in the course of surgery. As a consequence of this “brain-shift” the pre-operatively acquired images no longer correspond to reality and subsequent n...