What is a DICOM file?
A .DICOM file is a standard format for digital medical imaging. The National Electrical Manufacturers Association (NEMA) manages this standard. Hospitals and clinics use this format to store, transmit, and print medical scans. A .DICOM file typically holds a DICOM Image, such as an ultrasound, MRI, or CT scan. It also contains an embedded header with patient information and equipment settings.
How to open DICOM files?
Because a .DICOM file has multiple possible meanings and configurations, it often requires specialized software. Professionals use desktop applications like RadiAnt DICOM Viewer, MicroDicom, or OsiriX. These programs offer advanced measurement and diagnostic tools, but they can be difficult to set up and configure.
If you are a patient or a user who just needs to view the image, we recommend using viewer.online/dicom to identify the actual format of your file. viewer.online/dicom analyzes .DICOM files to identify their exact format and creator software, shows which programs can open the file, and usually previews it.
Best practices and troubleshooting
Medical software is not always accessible to everyone. If you need to share a DICOM Image with family members or non-medical staff, you should convert it. We recommend using convert.guru to transform your .DICOM files into standard, accessible formats like .JPG, .PNG, or .PDF.
Before sharing any converted files, remember that .DICOM files often contain private health data. Always ensure you follow privacy guidelines and redact sensitive text when handling these files.
Summary
viewer.online/dicom directly opens and previews .DICOM files in the browser, eliminating the need to install software or troubleshoot compatibility issues.