If you have questions on the use of Lumi, you might just find the answers here.

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I get an error when trying to upload a DICOM scan to an existing patient

Ensure to upload a DICOM scan to Lumi from the Home page (press the 'Home' button in the top left corner). Lumi will recognize if the DICOM scan belongs to an existing patient and will add it to that patient.

Read more: Upload a Patient

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The semi-automatic segmentation result is inaccurate, what can I do about this?

Begin by verifying whether your DICOM data meets the specified requirements outlined in the System Configuration. If your DICOM data is compatible with Lumi, but the result of the semi-automatic segmentation is not accurate enough, please inform us on the case by using the Feedback form on Lumi.cloud. To find the Feedback form, please press the person icon in the top right corner and select 'Report Feedback'.

Read more: System Configuration

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The QR code to open a hologram in the HoloLens does not work

To open a hologram using the QR code generated on Lumi.cloud, first open the Lumi App on your HoloLens. Sign in with your Lumi account and subsequently, select 'Open patient with QR' in the Cockpit. If the QR code is not scanned directly, enlarge the QR code and increase the brightness of your screen.

Read more: Continue on HoloLens

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I created a manual segmentation, but it is not there anymore after I reopen the hologram

Manual segmentation results are, in contrast to automatic segmentation results, not saved automatically. Therefore, always use the Save button in the hologram menu to save the hologram, if you want to keep the created manual segmentation.

Read more: Create a Hologram

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I uploaded 3D models to Lumi.cloud, but they are not visible in the Import STL module

To import uploaded STL models to a hologram, make sure to upload the STL models at the right level in Lumi. The right level to upload your 3D models is on Study or Hologram level. Check whether you uploaded your STL models at the right level:

• Study level: in the Home window click on a Person card > click on the DICOM study card > now you are at Study level 

• Hologram level: in the Home window click on a Person card > click on the DICOM study card > click on the Hologram card > click on the Hologram name at the top bar

Read more: STL Upload

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I imported an 3D model to my hologram, but it is not there anymore after I reopen the hologram

After importing an STL model to your hologram, you have to Save the hologram if you want to keep the STL model. To Save the hologram, use the Save button in the hologram menu.​

Read more: STL Upload

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In the HoloLens, I can not move, scale or resize my hologram anymore

To manipulate (move, scale, resize) a hologram in the HoloLens, always make sure you have selected the Hologram component in the hologram menu. The selected component in the hologram menu will be highlighted, meaning it has a lighter color than the other components. In the Hologram menu, each component has a specific submenu, with all options included relevant for that component.

Read more: Hologram Interactions

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I want to use Multiplayer mode, but I don't see the session of my colleague

To adequately use Multiplayer mode, make sure both HoloLenses are connected to a stable internet connection. Additionally, select the same patient group as your colleague started the Multiplayer session in and ensure both players have access to that patient group.

Read more: Multiplayer

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My colleague and I are using co-located Multiplayer mode, however the hologram is not shown at the same spot for both of us

For co-located Multiplayer mode, it is very important that both environments are scanned very carefully. In this way, the HoloLenses can match the environments and project the hologram at the same spot for the users. An optimal environment includes some basic objects as walls, tables and chairs and minimizes the amount of moving objects and/or persons in the field of view of the HoloLens.

Read more: Multiplayer

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Lumi Mobile does not load the hologram, it only shows a page with a blue background 

If Lumi Mobile does not load the hologram correctly, clear the browser cache of the webbrowser on your phone and reload Lumi Mobile. To clear the browser cache of Safari on iPhone: open Settings > Safari > press Clear History and Website Data. To clear the browser cache of Google Chrome on iPhone or Android: open the Chrome App > More > History > check Cookies Site Data and Cached Images and Files > press Clear Browsing Data.

Read more: Share Hologram

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Loading my hologram in the HoloLens App takes very long

Verify that the WiFi is functioning properly. If this is the case and the loading time remains prolonged, restart the application completely. Additionally, ensure that no active sessions (indicated by 3D boxes with play buttons) are running in the current space when launching the Lumi HL2 app.