Krios

 Improve source-localization accuracy and streamline electrode registration of EEG, MEG,  NIRS, PSG and ECG tests conducted with OEM equipment with the handheld digitizing  scanner that integrates your existing neurodiagnostic system: the Polaris®  Krios from NDI.

A New Approach to  Electrode Localization

Registering and labelling electrodes (sensors) in the subject’s coordinate system for EEG, MEG, NIRS, PSG and ECG research  and clinical tests conducted with OEM equipment can be a time-consuming and painstaking process. But it doesn’t have to be.  As an OEM solution, the Polaris® Krios handheld digitizing scanner integrates into your existing neurodiagnostic system to  measure, identify, and map electrode positions. Through an NDI software interface this measurement data is used to identify  and label each electrode within your neurofeedback software.  The entire setup, from scanning to electrode labelling, takes only minutes. It’s an integration of technologies that combines  the best of real-time 3D measurement and neurodiagnostic monitoring equipment — and will transform electrode coregistration for the better.

Added Value to Your Existing OEM Product Suite 

Extensive Integration Experience •  Benefit from over 30 years of measurement innovation and  integration expertise – NDI is trusted by the world’s foremost  medical device manufacturers. 

Accurate and Reliable Data Collection •  Capture marker positions to accuracy within 0.5 mm and a  repeatability of 0.1 mm. Only actual markers are measured for  electrode mapping purposes. 

Integrated Touch Probe •  Improve the detection of obstructed electrodes and electrode  positioning with one-touch localization and registration of  fiducial points such as the nasion, inion, and preauricular points.  

Growth through Technology •  Add a new level of versatility to your existing system offering,  and extend its capabilities to additional electrodiagnostic and  clinical neurophysiology applications and markets. 

Compliant with Safety Regulations •  Maintain subject safety – the Krios does not use a laser, and is  compliant with medical device regulation IEC 60601-1 3rd Edition.

Benefits to Operators 

Lightweight Ergonomic Scanner •  Operate the Krios with ease – its balanced one-hand grip, handy  start/stop trigger button, color-coded LED status indicator  lights, and audio cues maximize scanning efficiency. 

No Marker Calculations •  Scan right away – self-calibrating markers attach to any sized or  shaped electrode, in any order. No position calculations or sequencing  are required. Marker positions are automatically mapped. 

Automatic Registration Process •  Save significant electrode registration time – up to 256 markers can  be scanned in less than 2 minutes. Markers are then automatically  mapped and registered within the neurofeedback software. 

Built-In Snapshot Mode •  Capture digital images of the electrode setup for inclusion in the  subject’s file. For example, the subject has an asymmetrical skull  that requires a unique electrode placement.  

Instant Localization Results  •  Receive real-time scanning feedback – scanner LED status  indicator lights notify operators of successful/failed marker  acquisition, while the software provides a running tally of  localized markers.

How the Polaris® Krios Works

The Polaris Krios is based on optical measurement technology; the scanner uses light reflected by markers  to determine their position coordinates.

Results The rigid body is transformed from the Krios coordinate system to the subject coordinate system. Using the Krios software,  operators can append notes to electrode positions. The final point cloud with all identified marker coordinates, fiducial  points, and notes, is saved as a .CSV file for export to the neurofeedback software. The point cloud can then be mapped to  a pre-defined electrode configuration within the neurofeedback software.

Technical Overview

Specifications Dimensions (L x W x H) 155 mm x 75 mm x 300 mm Weight 860 g Power Requirements 100-250 V AC ~50/60 Hz, 1 A 

Sensor Specifications Measurement Volume 883 mm x 840 mm x 928 mm Update Frequency 20, 30, 60 Hz Scan Rate 256 markers < 2 minutes Accuracy Within 0.5 mm RMS Stand-off 105 mm from the scanner Depth of View 778 mm Near field width 276 mm Far field width 840 mm Safety IEC 60601-1 3rd Edition