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EGi Geoscan User Manual

Sensor digitization system
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GeoScan
Sensor digitization
system
User manual
For Scientific Research Purposes

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Summary of Contents for EGi Geoscan

  • Page 1 GeoScan Sensor digitization system User manual For Scientific Research Purposes...
  • Page 2 +1.541.687.7962 (tel) • +1.541.687.7963 (fax) www.egi.com • supportteam@egi.com • orderdesk@egi.com GeoScan is not intended for use in diagnosis or treatment of any disease or condition. It is a scientific research instrument designed for performing measurements and acquiring data for neurophysiological research. Philips makes no representation of the suitability of the instrument for any particular research study.
  • Page 3 GeoScan Sensor Digitization System Handheld Scanner and Software version 1.3 User Manual For Scientific Research Purposes GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 4 Section 5.3.4: Updated Stability Trigger information • Section 6.7: Updated probe instructions • Section 6.8: Revised for clarity, updated screenshots, and updated probe instructions • Updated Warnings and Cautions throughout | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...

  • Page 5: Table Of Contents

    2.2.2 Indications of the Scanner’s LED Stripe 2.2.3 Audible Tones 2.2.4 Scanner / Computer / Cable Connections 2.2.5 Scanning Apertures and Lenses 2.2.6 Calibration 2.3 GeoScan System Requirements 2.4 GeoScan Software Interface GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 6 1—Selecting a Template STAGE 2—Scanning the Sensor Locations STAGE 3—Probing the Fiducial Points STAGE 4—Probing the Alignment Sensors STAGE 5—Labeling and Review STAGE 6.10 6—Exporting 3D Coordinate Files STAGE | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 7 6.13 Quitting or Storing the System 6.14 optional Capturing Images GeoScan Quick Guide FOR PROFICIENT USERS Maintenance and Cleaning 8.1 Maintenance 8.2 Cleaning Surfaces 8.2.1 GeoScan Handheld Scanner Appendix A: EMC Declarations GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 8 | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...

  • Page 9: Preface

    256 EEG sensors on a subject’s scalp. The GeoScan handheld scanner captures the locations of sensors and the GeoScan software outputs a 3D coordinate file of those locations. The GeoScan system steps you through the stages of its automated registration process: ...
  • Page 10 Net Station, BESA, and MATLAB  Convert: Here you will use the GPS Solver software to convert the GeoScan 3D coordinate .txt files into one of several formats for use in Net Station, BESA, MATLAB, etc.  Photograph (optional): Lastly, if you will be creating head models for use in EGI’s GeoSource software, you will need to...
  • Page 11 NOT ALL SYSTEM OR SOFTWARE FEATURES ARE AVAILABLE FOR PURCHASE OR USE IN ALL COUNTRIES OR MARKETS. Refer to www.egi.com/company/certificationscompany. For all safety, use conditions, and step-by-step instructions for using the components of your EGI system, refer to the manuals and instructions (including third-party manufacturer documentation) that shipped with your system configuration.
  • Page 12 256 EEG sensors in a Geodesic Sensor Net (GSN) on a subject’s head. Figure P-1. Core components of a typical EEG-only GES system, including the GeoScan system | 8100550-03 • 2018-10-26 | GeoScan User Manual...
  • Page 13 About This Manual This manual provides information for installing and safely and effectively using the GeoScan sensor digitization system (handheld scanner and software). It assumes a working proficiency with EEG and computer systems. Typographic conventions: • Italics are used for definitions or newly introduced terms.
  • Page 14 PERFORMANCE AND SUPPORT  Tested. All components of your EGI system have been fully tested at the factory and certified to meet performance standards prior to shipping.  Training. To optimize your proficiency with your system, onsite training can be provided by an EGI support or authorized engineer.
  • Page 15 If you have a question, please: • For urgent issues during acquisition, contact EGI immediately. • For nonurgent issues, do the following before contacting EGI: – Isolate the problem. Try to repeat and define the problem. – Document the problem.
  • Page 16 | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...

  • Page 17: Safety And Use Conditions

    For all safety and use conditions for using your EGI system, refer to the manuals and instructions that shipped with your system. MR Unsafe. Never bring into the MR environment.

  • Page 18: Directions For Use

    Directions for Use As an optional component of the GES 400 family of EEG devices, the GeoScan sensor digitization system (handheld scanner and software) is intended to: • Quickly and accurately record the locations of EEG electrodes in a Geodesic Sensor Net (GSN) on a subject’s head.

  • Page 19: Conditions For Use

    Conditions for Use 1.3.1 Environmental Conditions for Transport and Storage Table 1-1. Environmental conditions for the transport and storage of GeoScan components -10˚ to 50˚C (15˚ to 125˚F) Storage Temperature 10% to 90% non-condensing Relative humidity Atmospheric pressure 50 kPa to 106 kPa 1.3.2 Environmental Conditions for Use...

  • Page 20: Scan Volume

    1.3.2 Scan Volume The scan volume is the area in which the GeoScan handheld scanner can optimally scan the sensors of a Geodesic Sensor Net (GSN). Ensure that the GSN being scanned is positioned within this area. Figure 1-1. Scan volume of the GeoScan handheld scanner (dimensions in millimeters (mm)) 105 mm ≈...

  • Page 21: Interference - Radio Frequency Emissions

    GeoScan System and result in personal injury. It is your responsibility to ensure that your GeoScan system and its components are safe and operate properly before using them. All GeoScan components have been tested and found to comply with the electromagnetic compliance limits for the Medical Device Directive 93/42/EEC (EN 60601-1-2:2007 Class A and JIS T 0601-1-2:2002).

  • Page 22: Certifications And Classifications

    Method of sterilization or disinfection Not suitable for sterilization IRED illuminators risk group Exempt 1.3.5 Symbols The following symbols are used on EGI devices and in this manual. Table 1-4. Symbols used on EGI devices and in this manual Symbol Description Symbol...
  • Page 23 (EGI and third-party mfr) Temperature limit Interference hazard 10˚C to 30˚C (50˚F to 90˚F) Humidity limits Altitude limits Do not dispose with other waste (comply Serial number with local regulations) GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...

  • Page 24: Safety Warnings

    Safety Warnings 1.4.1 Personal Injury Risks WARNING: Drop hazard. Maintain a solid grip on the GeoScan handheld scanner while scanning the subject. Cable entanglement hazard. Ensure that all cables are managed such that neither you nor your subject can be entangled in them.

  • Page 25: Equipment Damage Risks

    GeoScan System either adjacent to, or stacked with, other equipment. Check that the GeoScan System is operating normally if it is used either adjacent to, or stacked with, other equipment. Failure to do so may result in personal injury.

  • Page 26: Geoscan's Scanner And Software

    2 GeoScan’s Scanner and Software Overview and Specifications Table 2-1. Dimensions, weight, and scan rate of the GeoScan handheld scanner Dimensions 300 x 75 x 155 mm (11.8 x 2.95 x 6.10 in.) Weight 860 g (1.9 lb) Scan rate 256 markers <...

  • Page 27: Geoscan Handheld Scanner

    GeoScan Handheld Scanner 2.2.1 Buttons and Indicators GeoScan’s handheld scanner provides the following buttons and indicators. Figure 2-1. Buttons and indicators of the GeoScan handheld scanner GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...

  • Page 28: Indications Of The Scanner's Led Stripe

    2.2.2 Indications of the Scanner’s LED Stripe Table 2-4. Indications of the GeoScan scanner’s LED stripe Status Indication pulsating Scanner warming up white Scanner powered but white software is not running solid Scanner is ready blue pulsating Scanner scanning blue...

  • Page 29: Audible Tones

    GeoScan provides the following audible tones as feedback for the successful powering of the system and scanning of sensors. To adjust the volume of GeoScan’s audible tones, use your keyboard’s volume keys. Power up. When the GeoScan handheld scanner is first plugged in or the computer is turned on, GeoScan will emit two beep tones after the scanner has completed its diagnostic evaluation.

  • Page 30: Scanning Apertures And Lenses

    GeoScan’s system components are connected as follows. Figure 2-2. Connections of GeoScan’s system components 2.2.5 Scanning Apertures and Lenses For optimum performance, protect the lenses of the GeoScan’s scanning apertures from hard objects, fingerprints, dust, etc.: • For short storage periods, rest the scanner safely on a table like it is a telephone handset.

  • Page 31: Calibration

    The GeoScan handheld scanner comes calibrated and does not require recalibration with normal usage. However, if dropped or bumped, the scanner may need to be recalibrated. If such is the case, the GeoScan software will deliver an error message from the scanner’s internal bump sensor.
  • Page 32 .png image capture files. See the name and location of the .rom probe file, which is the basis for GeoScan’s .xml template files. DO NOT change this file or its location. The .xml scanning template files are already preloaded for you and ready to use.
  • Page 33 Image Capture feature are optimized for general use. If you wish to adjust these settings, use the Image Capture utility. However, you must understand how changes in the exposure settings will affect the resulting images. GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 34 GeoScan scanner. Utilities  Terminal Window. The Terminal Window is a text terminal for accessing GeoScan’s internal applications. Utilities  Console. The Console verifies the versions of software libraries and Java drivers that are installed.

  • Page 35: Geoscan's Onscreen Command Buttons

    Only if you need to back out of labeling to rescan sensors will you need to click the onscreen Label button to return to the labeling function. GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 36 You can then click the onscreen Scan or Probe button to rescan or re- probe the deleted markers. See chapter 6. | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 37 • The onscreen display will confirm the current Scan/Pause state. Scan/Pause state. While scanning, the onscreen Scan button becomes a Pause button. • To pause scanning, click Pause. • To restart scanning, click Scan. GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...

  • Page 38: Geoscan Window Panes

    3D sensor cloud: cloud and 2D Provides feedback for sensor map the scanning, probing, and aligning of sensor locations. 2D sensor map: Provides feedback for the labeling of sensor locations. | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 39 For example, if it shows you have scanned 187/129 sensors. Template Lists the selected template. Connection Confirms operational status: status operational  no physical and/or software connection  GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...

  • Page 40: Markers Of The 3D Sensor Cloud

    Unlabeled Markers. Dot on sensor has been scanned and Gray marked, but needs to be labeled via the onscreen Label button. Teal Fiducial Markers. Fiducial landmarks probed and marked. | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...

  • Page 41: Mouse Controls For The 3D Sensor Cloud

    Action Mouse control Result Select marker Left-click Marker turns yellow. on a marker Relabel marker Right-click Displays Change Label dialog. Delete marker Left-click + delete Deletes selected marker. GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 42 | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...

  • Page 43: Installing The Geoscan Software

    Neuro Technical Support (Table P-2) and you will be instructed how to download the software. Installing the GeoScan Software After you have downloaded the EGI GeoScan Installer, you will use it to install the GeoScan software. Double-click the installer’s icon under: Finder ...
  • Page 44 Mac OS Runtime for Java is required for installing GeoScan. If your computer does not have the appropriate version of Java, you will be prompted to install it. Go to section 3.2 to install Java, then return here and continue with step 3.
  • Page 45 GeoScan icon, and click Next. You can later drag the GeoScan icon to the Dock, to keep it with your other frequently used application icons. e) Click Finish. The wizard will end with an installation completed screen.

  • Page 46: Installing Java

    After downloading, browse to locate the JavaForOSX.pkg file. Double-click the JavaForOSX.pkg file, and follow all prompts. a) At Introduction, click Continue. b) At Read Me, click Continue. c) At License, click Continue Agree. | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 47 Accept the default destination, and click Continue. e) Accept the standard installation type, and click Install. Enter a username and password, and click Install Software. When installation is complete, click Close. GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 48 | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...

  • Page 49: Cabling The Geoscan Hardware

    4 Cabling the GeoScan Hardware Cable the components of the GeoScan system as follows. Plug the power/data cable of the USB converter into the base of the GeoScan handheld scanner. To properly seat the connector, align the marks on the plug and receptacle.
  • Page 50 Clasp the top and bottom cable covers around the lip of the USB converter and secure them with the thumbscrew. Plug the USB/data cable into the system computer. | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 51 After the diagnostic evaluation is complete, the LEDs on the USB Converter will light up as follows: • Power LED: Turns green to show the system is powered. GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 52 Confirm that the AC wall outlet is powered via its ON/OFF or reset switch. See step 7. If the scanner remains unready for scanning, contact Philips Neuro Technical Support (Table P-2). | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...

  • Page 53: Geoscan Process

    The reference (REF/Cz) sensor is positioned on the vertex.  The nasion sensor is positioned between the eyebrows.  The row of brow ridge sensors form an even and symmetrical arc. GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...

  • Page 54: Geoscan Stages

    3D coordinate file.  Export. Export the sensor locations as a 3D coordinate file.  Convert. Use the GPS Solver software to convert GeoScan 3D coordinate .txt files into one of several formats for use in Net Station, BESA, MATLAB, etc.

  • Page 55: Scanning Tips And Environment

     (optional) Photograph sensor placement for source localization. If you will be creating head models for use in EGI’s GeoSource software, you will need to take corroborating photographs of the GSN as applied on the head. See section 6.12.  (optional) Image Capture.
  • Page 56 One or two hands. Hold the scanner with one or two hands with the cable extending toward the right. This is the default orientation for the scanner. The onscreen 3D sensor cloud is on its side with this scanner orientation. | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 57 EEG sensors. Hold the scanner securely. Keep a secure hold of the scanner and hold it away from the subject such that it cannot drop on the subject. GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 58 GSN’s sensors. Also ensure that you have enough room to manage the scanner’s cable so that neither you nor your subject is entangled. | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...

  • Page 59: Scanning Environment

    Even indirect sunlight coming in through a window can cause IR interference for the GeoScan scanner. Therefore, close window shades or use GeoScan in a room with no windows. Nonreflective background. Only scan against a nonreflective background. Remove or cover shiny or reflective surfaces. Remove or drape covers over any nearby shiny or reflective surfaces.

  • Page 60: Scanning Tips

    All wires should be running alongside and/or pushed off of all sensor labels. Delete bad markers. Before rescanning any bad markers that appear in the 3D sensor cloud, they must be deleted (single-click + delete). | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 61 In this example, 83 sensors have been scanned for a 128-channel count GSN. Remember that the counter shows the number of sensors in a GSN plus the REF/Cz (vertex) sensor. GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 62 GSN. Be aware that while scanning 32- and 64-channel GSNs, the scanned sensor counter (located at the bottom of the GeoScan window) will need you to scan 129 “sensors.” For example, you will need to scan 129 “sensors” for a 32-channel GSN that includes: •...
  • Page 63 The scanner continues to scan until the trigger is released. Scan volume. This is the area in which the GeoScan handheld scanner can optimally scan the sensors of a Geodesic Sensor Net (GSN). See section 1.3.2. GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 64 Wire management. Ensure that no wires are covering sensor labels. The scanner cannot see and record obscured EEG sensors. | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...

  • Page 65: Probing Tips

    Preferred Probing Method — Manual versus the Stability Trigger Manual probing uses the scanner’s Probe button. Since the Stability Trigger probing requires additional skill, EGI recommends that you probe manually and leave the Stability Trigger disabled. Using the manual Probe button with the Stability Trigger enabled can lead to creating false markers.
  • Page 66 | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...

  • Page 67: Using Geoscan

    Press to turn on the system computer, but do not open the GeoScan software until section 6.4. Ensure that the GeoScan handheld scanner and computer are connected and ready. Refer to chapter 4. GeoScan User Manual | 8100550-03 • 2018-10-26 |...

  • Page 68: Launching The Software And Turning On The Scanner

    GeoScan software. If the GeoScan icon is on the desktop, you will double- click it. If the GeoScan icon is in the Dock, you will single- click it. When the GeoScan handheld scanner is first plugged in or the computer turned on, GeoScan will emit two beep tones after the scanner has completed its diagnostic evaluation.
  • Page 69 • If the GeoScan scanner has been plugged into power for more than two minutes, it is already warmed up and the GeoScan software and scanner are ready to use. • If, however, the software is launched before the scanner has been powered for two minutes, you will get a Temperature Out of Range message onscreen until the scanner has warmed up.

  • Page 70: Stage 1-Selecting A Template

    Before you scan, the first stage is to select a template that matches the channel count of the HydroCel or MicroCel GSN being worn by the subject. GeoScan will open with the last template that was used. You must select a template before you scan. Select a template as follows: a) If GeoScan opened with the correct template, use that template and proceed to section 6.6.

  • Page 71: Stage

    • One swath is one arced, downward sweep. path • Work around the head in the pattern of orange slices. Wire No wires should cover any sensors. management GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 72 Continually updates the current number of sensors that have been scanned. Sensor Remember that GeoScan requires that you scan the stabilizer counter sensors (those without electrodes) in the 32- and 64-channel GSNs for a count up to 129 sensors.
  • Page 73 Then, slowly and smoothly, move it in closer and out farther, until the scanning distance is established and: • You hear a bloop tone. • The LED stripe turns blue. GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 74 As you scan, you will see 3D sensor cloud the 3D sensor cloud fill in. As you scan, you will see Counter the counter increase. | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 75 GSN’s channel count. If markers are missing or questionable, fix them as follows. Otherwise, continue with probing. See section 6.7. GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 76 Review the 3D sensor cloud as in step 8. b) If necessary, fix any missing or questionable markers as in step 9. c) Otherwise, continue with probing. See section 6.7. | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...

  • Page 77: Stage 3-Probing The Fiducial Points

    (nasion, left preauricular, and right preauricular) to confirm those positions for the software. For probing tips, see section 5.3.4. For probing, you will need the GeoScan probe, along with the GeoScan handheld scanner. Carefully probe the fiducial points, as you will be touching the probe to the subject’s skin.
  • Page 78 – bracing the probe with a finger alongside the head and anchored on the subject’s head, and parallel with the surface of – protecting the subject from the the point being probed. probe’s tip. | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 79 Note that the red line onscreen is not the probe but rather an arrow pointing toward the probe’s tip. Probe Probe Volumes Rotate = left-click + drag | Pan = option-click + drag | Zoom = right-click + drag GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 80 The scanner will emit an audible beep tone after the first two fiducial points but a squawk tone after the third. Verify that the software marked the same point that you probed and that it did not skip a prompt. | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 81 If one or more fiducial markers are questionable, then fix them as follows. To fix any fiducial marker, after the Register Subject dialog has closed: You must delete and reprobe all fiducial markers.  Click the onscreen Clear button. GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...

  • Page 82: Stage 4-Probing The Alignment Sensors

    3D sensor cloud with the sensor template. Note that “node” refers to the top of a sensor. You must align before you label. Align as follows: Click the onscreen Align button. | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 83 Follow the order of the prompts displayed by the Register Subject dialog. Hold the scanner away from the GSN and the probe, until you have the probe in position. GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 84 Draw the scanner in until: • It is within scanning distance. • Its LED stripe turns blue. • Its apertures are pointed directly at the probe’s reflective disks. | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 85 You can also click Register Point on the Register Subject dialog. If the Stability Trigger is enabled, the scanner will automatically mark the sensor after the set time period. GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 86 Continue following the prompts to ensure that you do not mislabel any sensors. After the last alignment sensor has been probed, you will be returned to the Alignment Probe Summary dialog. Click OK. | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...

  • Page 87: Stage 5-Labeling And Review

    3D coordinate file. Remember that the alignment stage ends by opening the labeling window—the window with the 2D sensor map on the right side of the 3D GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 88 = scanned and marked WHITE = scanned, but unlabeled GRAY = missed by scanner, but predicted by template (verify or rescan) FUCHSIA = fiducial probed and marked TEAL | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 89 Enlarge view, if needed: Some sensors can appear as arrows, so review all arrows. Click+drag to enlarge the window as much as is necessary to see all markers clearly. GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 90  Rescan the sensor(s) of the deleted marker(s) and/or blank space(s).  Double-press the scan trigger or click the onscreen Pause button to pause scanning.  Click the onscreen Label button. | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...

  • Page 91: Stage 6-Exporting 3D Coordinate Files

    Here you will export the sensor locations as 3D coordinates in a .txt file. Note that the GeoScan software distinguishes pedestals that contain electrodes from stabilizer pedestals that do not contain electrodes. Any exported 3D coordinate files for 32- and 64- channel GSNs will contain only those sensors whose pedestals contain electrodes.

  • Page 92: Convert Using Import / Export

    STAGE Keep the GSN on the subject until after section 6.12. A GeoScan .txt file cannot be taken directly into Net Station, GeoSource, or other application. First, it must be converted into a compatible format. You will use the GPS Solver software to verify your GeoScan results and/or convert your GeoScan .txt files into one of several formats.
  • Page 93 The import/export conversion allows you to verify your GeoScan results before converting them, but it does not allow you to convert batches of files. Locate and launch the GPS Solver application from either the: • Dock or • Finder  EGI  GPS  GPS Solver.

  • Page 94: Convert Using The Geoscan Batch Converter

    Click File  Export  <format>. 6.11.2 Convert using the GeoScan Batch Converter Keep the GSN on the subject until after section 6.12. | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 95 The batch converter allows you to convert batches of files, but it does not allow you to verify your GeoScan results before converting them. Locate and launch the GPS Solver application from either the: • Dock or • Finder  EGI  GPS  GPS Solver.
  • Page 96 Use the GeoScan Batch Converter window to convert GeoScan .txt files as follows. To use the GeoScan file batch converter:  Drop a file or folder containing files into the file drop pane.  For each file, select the desired export file format.

  • Page 97: Optional Photograph Sensor Placement For Source Localization

    Photograph Sensor Placement optional for Source Localization Lastly, if you will be creating head models for use in EGI’s GeoSource software, you will need to take corroborating photographs of the GSN as applied on the subject’s head. If you will not be photographing the GSN on the subject’s head, you can remove the GSN from the subject following the GSN’s instructions and...

  • Page 98: Quitting Or Storing The System

    USB converter from the base of the GeoScan handheld scanner. Quit the GeoScan software. Store the GeoScan handheld scanner and system components as follows: • If using again soon, you can rest the scanner safely on a table like it is a telephone handset.

  • Page 99: Optional Capturing Images

    Before using the Image Capture feature, ensure proper environmental lighting. See section 5.3.2. Never use GeoScan’s Image Capture feature for head modeling images. Use a high-resolution camera. See section 6.12. Whenever taking photographs, you need the subject’s written consent to be photographed.
  • Page 100 | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...

  • Page 101: Geoscan Quick Guide For Proficient Users

    See section 6.4. Select template See section 6.5. Scan all sensors See section 6.6. If needed, select, delete, Review markers and rescan any bad See section 6.6. markers. GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 102 See section 6.9. delete, rescan, and reverify. Export and convert import .txt file review export See sections 6.10 and 11. Photographs Opt. Needed for head modeling. See section 6.12. | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...

  • Page 103: Maintenance And Cleaning

    For service, contact Philips Neuro Technical Support (Table P-2). If needed, you will receive instructions on how to safely pack and return the unit to EGI for evaluation. Cleaning Surfaces The surface of EGI devices, like the GeoScan handheld scanner, should be cleaned: • as needed, •...

  • Page 104: Geoscan Handheld Scanner

    Do not use any solvent to clean the scanner. Solvents may damage the finish and remove lettering. 8.2.1 GeoScan Handheld Scanner To clean the GeoScan handheld scanner, do the following: Remove power from the GeoScan handheld scanner. Unplug the USB Converter’s power/data cable from the base of the GeoScan handheld scanner.
  • Page 105 Use a cloth dampened with mild soapy water or isopropyl alcohol, taking care (other than lenses and screens) not to wet any electrical contacts. Dry immediately: with a clean, dry, lint-free cloth. GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 106 | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...

  • Page 107: Appendix A: Emc Declarations

    Appendix A: EMC Declarations The GeoScan sensor digitization system must be installed and put into service according to the electromagnetic compliance (EMC) guidelines and declarations provided here. • Electromagnetic emissions (see Table A-1) • Electromagnetic immunity (see Table A-2) •...
  • Page 108 Table A-1. Electromagnetic compatibility (EMC) emissions guidelines and declarations for GeoScan systems GeoScan systems are intended for use in the electromagnetic environment specified below. The customer or user of a GeoScan system should ensure that it is used in such an environment. Electromagnetic Environment—...
  • Page 109 Table A-2. Electromagnetic compatibility (EMC) immunity guidelines and declarations for GeoScan systems GeoScan systems are intended for use in the electromagnetic environment specified below. The customer or user of a GeoScan system should ensure that it is used in such an environment. IEC 60601 Test...
  • Page 110 Table A-3. Electromagnetic compatibility (EMC) immunity guidelines and declarations for non-life- supporting equipment (such as GeoScan components) GeoScan systems are intended for use in the electromagnetic environment specified below. The customer or user of a GeoScan system should ensure that it is used in such an environment. Immunity...
  • Page 111 RF transmitters, and electromagnetic site survey should be considered. If the measured field strength in the location in which the GeoScan system is used exceeds the applicable RF compliance level above, the GeoScan system should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as reorienting or relocation the GeoScan system.
  • Page 112 GeoScan components GeoScan systems are intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or user of a GeoScan system can help prevent electromagnetic interference by maintaining a minimum distance between...
  • Page 113 Industry Canada Compliance Statement: This ISM device complies with Canadian ICES-001. Avis de Conformité à la réglementation d’Industrie Canada: Cet appareil ISM est conforme à la norme NMB-001 du Canada. GeoScan User Manual | 8100550-03 • 2018-10-26 | FOR SCIENTIFIC RESEARCH PURPOSES...
  • Page 114 | 8100550-03 • 2018-10-26 | GeoScan User Manual FOR SCIENTIFIC RESEARCH PURPOSES...

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