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https://www.readbyqxmd.com/read/27286266/a-pipeline-for-3d-multimodality-image-integration-and-computer-assisted-planning-in-epilepsy-surgery
#1
Mark Nowell, Roman Rodionov, Gergely Zombori, Rachel Sparks, Michele Rizzi, Sebastien Ourselin, Anna Miserocchi, Andrew McEvoy, John Duncan
Epilepsy surgery is challenging and the use of 3D multimodality image integration (3DMMI) to aid presurgical planning is well-established. Multimodality image integration can be technically demanding, and is underutilised in clinical practice. We have developed a single software platform for image integration, 3D visualization and surgical planning. Here, our pipeline is described in step-by-step fashion, starting with image acquisition, proceeding through image co-registration, manual segmentation, brain and vessel extraction, 3D visualization and manual planning of stereoEEG (SEEG) implantations...
2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/25513567/seeg-trajectory-planning-combining-stability-structure-and-scale-in-vessel-extraction
#2
Maria A Zuluaga, Roman Rodionov, Mark Nowell, Sufyan Achhala, Gergely Zombori, Manuel Jorge Cardoso, Anna Miserocchi, Andrew W McEvoy, John S Duncan, Sébastien Ourselin
StereoEEG implantation is performed in patients with epilepsy to determine the site of the seizure onset zone. Intracranial haemorrhage is the most common complication associated to implantation carrying a risk that ranges from 0.6 to 2.7%, with significant associated morbidity. SEEG planning is done pre-operatively to identify avascular trajectories for the electrodes. In current practice neurosurgeons have no assistance in the planning of the electrode trajectories. There is great interest in developing computer assisted planning systems that can optimize the safety profile of electrode trajectories, maximizing the distance to critical brain structures...
2014: Medical Image Computing and Computer-assisted Intervention: MICCAI ..
https://www.readbyqxmd.com/read/25485435/seeg-trajectory-planning-combining-stability-structure-and-scale-in-vessel-extraction
#3
Maria A Zuluaga, Roman Rodionov, Mark Nowell, Sufyan Achhala, Gergely Zombori, Manuel Jorge Cardoso, Anna Miserocchi, Andrew W McEvoy, John S Duncan, Sébastien Ourselin
StereoEEG implantation is performed in patients with epilepsy to determine the site of the seizure onset zone. Intracranial haemorrhage is the most common complication associated to implantation carrying a risk that ranges from 0.6 to 2.7%, with significant associated morbidity. SEEG planning is done pre-operatively to identify avascular trajectories for the electrodes. In current practice neurosurgeons have no assistance in the planning of the electrode trajectories. There is great interest in developing computer assisted planning systems that can optimize the safety profile of electrode trajectories, maximizing the distance to critical brain structures...
2014: Medical Image Computing and Computer-assisted Intervention: MICCAI ..
https://www.readbyqxmd.com/read/25161004/a-novel-method-for-implementation-of-frameless-stereoeeg-in-epilepsy-surgery
#4
Mark Nowell, Roman Rodionov, Beate Diehl, Tim Wehner, Gergely Zombori, Jane Kinghorn, Sebastien Ourselin, John Duncan, Anna Miserocchi, Andrew McEvoy
BACKGROUND: Stereoelectroencephalography (SEEG) is an invasive diagnostic procedure in epilepsy surgery that is usually implemented with frame-based methods. OBJECTIVE: To describe a new technique of frameless SEEG and report a prospective case series at a single center. METHODS: Image integration and planning of electrode trajectories were performed preoperatively on specialized software and exported to a Medtronic S7 StealthStation. Trajectories were implemented by frameless stereotaxy using percutaneous drilling and bolt insertion...
December 2014: Neurosurgery
https://www.readbyqxmd.com/read/21096237/partial-directed-coherence-estimated-on-stereo-eeg-signals-in-patients-with-taylor-s-type-focal-cortical-dysplasia
#5
COMPARATIVE STUDY
Giulia Varotto, Silvana Franceschetti, Roberto Spreafico, Laura Tassi, Ferruccio Panzica
The study was aimed at evaluating the changes in dynamical connectivity, between interictal, preictal and ictal condition, among signals derived from StereoEEG recordings in patients with Taylor's type focal cortical dysplasia (FCD type-II), by means of Partial Directed Coherence and indexes derived from graph theory. Results showed that seizures are characterized by an increased synchronization, mainly within the regions involved in the generation of the epileptogenic activity. Our findings reveal that the proposed procedure can be considered a suitable techinque to properly identify the pathological synchronization mechanisms underlying seizure generation and to support the identification of the epileptogenic zone...
2010: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/20362416/interictal-high-frequency-oscillations-indicate-seizure-onset-zone-in-patients-with-focal-cortical-dysplasia
#6
Milan Brázdil, Josef Halámek, Pavel Jurák, Pavel Daniel, Robert Kuba, Jan Chrastina, Zdenek Novák, Ivan Rektor
Interictal high-frequency oscillations (HFO) were recently identified in recordings from depth macroelectrodes in epileptic patients. StereoEEG (SEEG) recordings were analyzed in four patients with medically intractable partial seizures due to focal cortical dysplasia type IIA. Characteristics of HFO within seizure onset zone (SOZ), irritative zone, and remote brain areas were investigated. Whilst the rate of occurrence for ripples (80-200 Hz) was significantly higher in recordings from within than outside the SOZ, the rate of fast ripples (200-450 Hz) was less reliable index of SOZ...
June 2010: Epilepsy Research
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