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How do I configure the local server?

The local server allow you to store images in a local database (Access or MSSQL Server 2008, depending on your plugin). You can browse your studies, import, export, open images and create, write, modify, verify reports.
To configurate your local server, follow the steps described below:

  1. Open the preference panel (click on the "Preferences" button in the database page).
  2. Select the "Servers" category.
  3. Select the "Local Server" page.


  4. To modify the settings, the Local server must be stopped first. Click on the "Shutdown Server" button if necessary. Since the DICOM Server and the Remote Server use the Local server, you may need to shutdown those servers first.
  5. Assign an AE Title for the local server.
  6. Choose the database file to be used. You are not supposed to modify this settings since it was automatically set by the installer of Onis.
  7. Select the import properties:
    • Check on "Create an icon image for fast preview" to generate an icon image for each imported image. Each time an image will be imported in the local database, Onis will generate an icon that will be displayed when browsing the images. This icon will also be visible when browsing the local database remotely using the remote client plugin. If this option is checked off, no icon will be generated, no image preview will be available for the remote clients and the preview of images will be a bit slower when browing images in local.
    • If you import the same image twice, you can define the behaviour of the local server. The image can be overwritten (the previous image will not be deleted though, it will still exist on your hard disk but only the newest image can be displayed or exported), or the image can be ignored. When ignored, you can choose to send a failure status to notice the device that sent the image that the image was not properly imported or you can send a success status (since it is supposed to be the same image, it should be like you have imported it).
    • When importing an image, it contains information about the patient, the study, the series and the images. Some of those information, like the patient's name, is stored in the database. Sometimes, different modalities are used to generates studies and the patient information may be different (the patient name may be written in romanji from the modality A and in katakana from the modality B for example). When receiving an image that contains different information that the one stored in the database, you can choose to update or not the database information (keep the old information or update with the new one). More rare, it can happen also with the study, series or image information (if an image in a series was manually modified for some reasons); Onis provides you also the option to choose to update or ignore those new information in the database.
    • If the patient contains no patient ID (in case of an emergency for example), you can configurate the local server to generate a default patient ID. An optional base ID that you provided will be used with the current date and time to generate this default ID. Or you can simply ask the local server to simply reject the image.
  8. When you create, modify, overwrite an image in Onis, an history is created to let you know what happened to this image since it was imported first. When modifying an image, the original image is saved. You can choose to keep a backup of the image before each modify or to simply backup only the original image to avoid multiple copies. Most of the case, you need to keep only the original image and the current image.
  9. When deleting studies, series or images from the local database, you can specify that the user will enter a password to confirm the deletion.
  10. If your local server contains a big number of studies, you may want to ignore the search requests when no criteria were entered because those requests may take a long time and require a huge memory. Check on the "Reject empty requests" checkbox to reject requests without any criteria. The local server will only respond to requests that contain criterias such as the patient's ID or patient's name.


Click on the "Start Server" button to start the Local Server. You can choose to automatically start the Local Server when Onis starts by checking on the "Auto Start" check box. If checked off, you will have to manually start the Local Server when Onis started. Since you almost always need the local serve to browse, import, export, open images, it is recommanded to check on this option.



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