Import DICOM files (preview)

Bulk import is a quick way to add data to the DICOM® service. Importing DICOM files with the bulk import capability enables:

  • Backup and migration: For example, your organization might have many DICOM instances stored in local or on-premises systems that you want to back up or migrate to the cloud for better security, scalability, and availability. Rather than uploading the data one by one, use bulk import to transfer the data faster and more efficiently.

  • Machine learning development: For example, your organization might have a large dataset of DICOM instances that you want to use for training machine learning models. With bulk import, you can upload the data to the DICOM service and then access it from Microsoft Fabric, Azure Machine Learning, or other tools.


Enable a system-assigned managed identity

Before you perform a bulk import, you need to enable a system-assigned managed identity.

  1. In the Azure portal, go to the DICOM instance and then select Identity from the left pane.

  2. On the Identity page, select the System assigned tab.

  3. In the Status field, select On.

  4. Choose Save.

Screenshot showing the system assigned managed identity toggle on the Identity page.

Enable bulk import

You need to enable bulk import before you import data.

Use the Azure portal

  1. In the Azure portal, go to the DICOM service and then select Bulk Import from the left pane.

  2. On the Bulk Import page, in the Bulk Import field, select Enabled. Select Save.

    Screenshot that shows the Bulk Import page with the toggle set to Enabled.

Use an Azure Resource Manager template

When you use an Azure Resource Manager template (ARM template), enable bulk import with the property named bulkImportConfiguration.

Here's an example of how to configure bulk import in an ARM template:

    "type": "Microsoft.HealthcareApis/workspaces/dicomservices", 
    "apiVersion": "2023-02-01-preview", 
    "name": "[parameters('dicomservicename')]", 
    "location": "[parameters('regionname')]", 
    "identity": { 
        "type": "SystemAssigned" 
    "properties": { 
        "bulkImportConfiguration": { 
            "enabled": true 

Import data

After you enable bulk import, a resource group is provisioned in your Azure subscription. The name of the resource group begins with the prefix AHDS_, followed by the workspace and DICOM service name. For example, for the DICOM service named mydicom in the workspace contoso, the resource group is named AHDS_contoso-mydicom.

Within the new resource group, two resources are created:

  • A randomly named storage account that has two precreated containers (import-container and error-container) and two queues (import-queue and error-queue).
  • An Azure Event Grid system topic named dicom-bulk-import.

DICOM images are added to the DICOM service by copying them into the import-container. Bulk import monitors this container for new images and adds them to the DICOM service. If there are errors that prevent a file from being added successfully, the errors are copied to the error-container and an error message is written to the error-queue.

Grant write access to the import container

The user or account that adds DICOM images to the import container needs write access to the container by using the Data Owner role. For more information, see Assign Azure roles using the Azure portal.

Upload DICOM images to the import container

Data is uploaded to Azure Storage containers in many ways:


DICOM® is the registered trademark of the National Electrical Manufacturers Association for its Standards publications relating to digital communications of medical information.