Home
Knowledge Base
General Help Guides
Anonymizing Scans in 3DICOM

Anonymizing Scans in 3DICOM

An Introduction to Anonymization in 3DICOM

3DICOM offers secure, user-friendly options for anonymizing medical images—both during upload and through its dedicated anonymization tool.

This guide explains what anonymization is, how 3DICOM’s anonymization options work, when and why you might want to use them, and provides step-by-step instructions for using each option.

What is Anonymization?

Anonymization is the process of removing or hiding identifiable personal information from medical images to protect patient privacy and confidentiality.

On the 3DICOM platform, this means that details such as patient names, dates of birth, IDs, and other sensitive data can be removed from medical imaging files during upload or locally via the anonymization tool.

Understanding when to use Anonymization

Anonymization of medical data is often used when individuals want to protect their privacy, such as when sharing images for second opinions, participating in research, or storing data in the cloud.

Anonymization helps ensure personal details aren’t linked to the medical images. However, in situations where accurate identification is essential—like ongoing medical care, personal health records, legal cases, or insurance claims—keeping data identifiable ensures clear association with a person’s medical history and supports continuity of care or documentation requirements.

When you might want to anonymize medical data:

Sharing a scan for a second opinion or consultation: You can share scans with other healthcare professionals without revealing personal details about yourself or your patient.

Participating in research: Anonymization helps protect your privacy while allowing your images to contribute to valuable medical studies.

Using cloud storage or telemedicine: Anonymization helps reduce the risk of any personal details being exposed when storing or sharing images online.

Supporting public datasets or education: If you’re contributing images for teaching, research, AI model development, or public datasets, anonymization helps ensure that personal information—whether yours or your patient’s—is not linked back to an individual.

When you might not want to anonymize medical data:

Continuity of care: When a healthcare provider must link the images to a patient’s medical record for accurate diagnosis and treatment.

Personal health management: If you want to keep full identifying details intact for easy reference to your own medical records.

Legal or insurance purposes: When the data needs to be verifiable and tied directly to you or a patient’s identity for claims, reporting, or official documentation.

Anonymization Recommendations for User Types

While anonymization within 3DICOM is optional, it is encouraged to support privacy, compliance, and proper data handling in a number of circumstances.

Anonymization recommendations for different user groups are detailed under the tabs below.

For patients uploading and storing their own medical scans, anonymization is optional. If scans are for personal reference, anonymizing them isn’t necessary, but it can offer extra peace of mind.

Suppose you plan to share your scans and do not wish to reveal your identity. Anonymizing your scans in this situation is recommended to protect your personal health information (PHI) and maintain control over who can access your data.Researchers and educators using real-life case studies or medical imaging for educational purposes should always anonymize scans.

Researchers and educators using real-life case studies or medical imaging for educational purposes should always anonymize scans.

This protects patient confidentiality, ensures ethical data handling, and complies with standards like HIPAA and GDPR. Anonymization is essential when sharing data in publications, teaching, or collaborative settings where PHI must not be disclosed.

Stay tuned: 3DICOM is working to enhance its Anonymization Tool with additional functionality to give users greater control over how medical images are anonymized. Soon, users will be able to select from standardized DICOM anonymization profiles, enabling them to tailor the anonymization process to suit specific needs while aligning with HIPPA standards. This will provide added flexibility for professionals managing data for clinical, research, or educational purposes.

In clinical settings, retaining patient-identifiable information is essential for diagnosis, treatment planning, and coordinated care.

Healthcare professionals should avoid anonymization if scans need to be linked to patient records or shared among care teams. All identifiable data must be handled in compliance with healthcare privacy laws and data security protocols.

Understanding 3DICOM’s Anonymization Options

Both of 3DICOM’s anonymization options offer secure, user-friendly ways to anonymize medical images, but each produces a different output. Understanding these differences will help you choose the method that best suits your anonymization needs.

How both options work is explained in the tabs below.

Anonymize on Upload:

With 3DICOM’s Anonymize on Upload option, you can anonymize medical images as you upload them to the platform. This feature automatically strips personally identifiable information from your DICOM files and gives you the option to review and edit key fields—such as Patient Name, Study Name, and Scan Name—before completing the upload. Once uploaded, your images are securely stored in 3DICOM’s cloud, ready for viewing or sharing with sensitive details removed.

Anonymization Tool:

The 3DICOM Anonymization Tool lets you automatically anonymize your medical images directly on your device—without uploading any files to the cloud. The tool runs in your browser, removing personally identifiable tags from the metadata of each DICOM file while keeping everything local. Once the process is complete, you’ll receive a packaged ZIP file of the anonymized images, ready for secure storage or sharing as you choose.

How to Anonymize a Scan on Upload

A scan can be anonymized during upload to ensure all personally identifiable information is removed before storage on 3DICOM’s servers.

Instructions on how to anonymize your scan during upload are provided below.

From Upload Scan

Steps to get there:

1. Log in to your 3DICOM account. You will be automatically directed to the dashboard.

2. Click ‘Upload Scan’ to begin the upload process.

3. Follow the steps of the upload process until you get to the Anonymization tab.

For a detailed walkthrough of the upload process, see  the Uploading Your Medical Data to 3DICOM help guide.

4. (Optional) If you want to anonymize the scan, switch on the ‘Anonymize on upload’ toggle.

5. (Optional) Edit your folder names then click ‘Next’ and following the prompts to complete the rest of the upload process.

Managing Folder Names: Folder names are used to help you organize and identify scans uploaded to your 3DICOM Dashboard. Giving them a specific name can make it easier to find later. However, keep in mind that this information will also be included if you share the scan.

6. Annonymization will occur on Upload.

How to Use the Anonymization Tool

With 3DICOM’s Anonymization Tool, you can anonymize scans locally in your browser and download them as a ZIP file—no upload to 3DICOM’s servers required.

Instructions on using the anonymization tool are provided below.

From Anonymize Images

By clicking the highlighted 'Anonymize images' users will be taken to 3DICOM's anonymize page.

Steps to get there:

1. Log in to your 3DICOM account. You will be automatically directed to the dashboard.

2. Click ‘Anonymize images’ to open the anonymization page.

The 'Upload DICOM series' button highlighted on the Anonymize page.

3. Click ‘Upload DICOM series’ to open your computer’s file browser or drag and drop your scan into the upload area.

4. Select the folder on your device containing the DICOM files you wish to anonymize and confirm your selection.

Files must be under 200 MB to proceed. If your DICOM series exceeds this limit, consider compressing the files.

5. Once your scan is added, the anonymization tool automatically removes all embedded personal information and packages it into a compressed .zip file. The anonymized file will then download directly to your device’s downloads folder.

Although the term “upload” is used, scans anonymized with this tool are never sent to or stored on your 3DICOM Online Viewer account. The entire “upload” and “download” process happens locally within your browser, on your device.

6. After a scan is anonymized using this tool, a temporary record of the anonymized scan is recorded in your browser and displayed under ‘Recent Anonymised Series’.

No actions can be performed on the records listed under “Recent Anonymised Series.” These records are temporary and will be cleared the next time you delete your browser data.

CONCLUSION

3DICOM’s integrated anonymization features ensure patient privacy by removing personal identifiers from medical scans. Whether you’re uploading to your 3DICOM account or using the standalone anonymization tool, you can securely create de-identified scans. This is ideal for patients storing records, educators using case studies, and researchers working with clean datasets.

Was this article helpful?

Yes No

Site-wide header