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Functional mapping

Functional mapping

visor2™ allows users to evaluate functional organization of the human cortex using non-invasive, navigated transcranial magnetic stimulation (TMS). This innovative solution comes with intuitive workflows and high-precision neuronavigation, supporting stimulators from all major TMS manufacturers.

Benefits

  • User friendly and intuitive step-by-step workflows for motor and language mapping
  • Reliable high-precision optical tracking technology
  • Real-time visual feedback for TMS-EMG (e.g. MEP responses) and overlay upon 3D representation of individual MRI
  • Highly flexible and configurable workflows and task management for language mapping
  • Colored DICOM export of mapped functional hotspots for further review and processing in surgical navigation systems

Motor mapping

visor2™ integrates navigated TMS and EMG recording with real-time 3D visualization of stimulated brain areas. Evoked motor responses are projected onto patients’ anatomical MRI to create functional maps relating to the relevant cortical areas. Supported by a real-time estimation of TMS-induced electrical fields, visor2™ calculates and highlights targeted locations. The evoked motor responses are processed online and the calculated amplitude is projected onto an image of the stimulated cortical location to generate functional maps. The generated maps or single MEP responses can be exported in 3D image formats such as in DICOM for use in surgical navigation systems.

Download our functional motor mapping brochure here

An EMG response map is generated on the MRI and can be exported in DICOM format.


Language mapping (investigational use only)

visor2™ can be used to do functional mapping of language eloquent areas with visual naming tasks for use in pre-surgical evaluation. It provides a three-step workflow to support the user in this complex procedure:

1. During the first step, an easily customizable stack of images is presented to the patient in a naming task. The patient reaction to each image is audio and video recorded.

2. In the second step, the same naming task is repeated and recorded while navigated repetitive TMS is applied to the eloquent cortical language area. When short bursts of rTMS are applied to cortical language sites during speech production, either speech errors (e.g. speech arrest) or accurate responses are noted.

3. In the third step, recordings from step one and step two can be compared, and recorded responses from step two can individually be categorized according to the specific type of verbal response. Categories can be customized to fit each user’s specific needs. After classification, response maps can be overlaid onto the subject’s anatomical MRI and exported in 3D image formats (e.g. DICOM) for use in surgical procedures.

Download our functional speech mapping brochure here.

 

*visor2 system is CE marked as a medical device in the EU, according to MDD 93/42/EEC, class lla and has FDA clearance under 510(k) in the USA. Medical Device License (MDL) issued by Health Canada. Compliant with the Australian TG(MD)R and registered in the ARTG. Manufactured by eemagine GmbH, Berlin, Germany, ISO 13485 certified. ANT Neuro and eemagine are part of the neuromotion group. For the regulatory status of visor2 outside of Australia, Canada, EU and USA, please contact your local distributor or ANT representation. EEG-TMS, language mapping and dual-coil navigation with visor2 is intended for research and educational use only.

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