Which MIME types are related to file extension ".dicom"?
The .dicom file extension is associated with 1 MIME types:
A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.
About .dicom Files
DICOM files are specialized medical imaging files used in healthcare.
They store diagnostic images and important patient metadata in a standardized format.
This file type follows the application/dicom MIME type, indicating its role in processing imaging data.
Key uses include:
- Saving high-resolution images from CT, MRI, and X-ray scans
- Embedding patient details and imaging parameters
- Supporting interoperability between medical devices and PACS software
Based on information from FilExt.com, this format is essential for standardizing medical image communication and storage.
Relationship between file extension and MIME type
A file extension is a suffix at the end of a filename that indicates what type of file it is. File extensions help both users and operating systems identify what application should be used to open the file.
File extensions are typically separated from the filename by a period (dot) and consist of 2-4 characters, though they can be longer. For example, in the filename "document.pdf", ".pdf" is the file extension.
File extensions are closely related to MIME types, as they both serve to identify the format of a file. However, while MIME types are used primarily by web browsers and servers, file extensions are used by operating systems and applications.
Associated MIME types
FAQs
How do I open a .dicom file on Windows or Mac?
You need specialized medical imaging software to view these files, as standard photo viewers cannot process them. Popular free options include MicroDicom or RadiAnt DICOM Viewer for Windows, and OsiriX or Horos for macOS. These programs allow you to manipulate contrast, zoom, and view the embedded patient metadata.
Can I convert a DICOM file to a standard image like JPEG or PNG?
Yes, most DICOM viewers include an "Export to Image" feature that allows you to save the scan as a standard JPG or PNG file. However, converting the file usually strips away the medical metadata and may reduce the bit-depth of the original diagnostic image.
What is the difference between .dicom and .dcm extensions?
There is no technical difference; both extensions represent the same Digital Imaging and Communications in Medicine format. While .dcm is the most common extension for these files, some systems explicitly use the full .dicom suffix. You can often rename the file extension from one to the other without affecting the file's integrity.
Does a .dicom file contain sensitive personal information?
Yes, DICOM files almost always embed Protected Health Information (PHI), such as the patient's name, birth date, and ID, directly into the file header. Before sharing these files for research or educational purposes, you must use "anonymization" software to strip this metadata to comply with privacy laws like HIPAA.
How do I configure a web server to serve DICOM files?
To ensure browsers or medical web viewers handle the file correctly, you should configure your server with the correct MIME type. The standard type is application/dicom, which tells the client that the file contains medical imaging data. You can verify proper configuration and type details at mime-type.com.
Why can't I edit a DICOM file in Photoshop?
While modern versions of Adobe Photoshop (Extended or CC versions) can open DICOM frames, standard versions or older image editors do not support the format natively. Even if opened in Photoshop, the software is treated as a generic image editor and is not suitable for making clinical diagnostic decisions.
General FAQ
What is a MIME type?
A MIME (Multipurpose Internet Mail Extensions) type is a standard that indicates the nature and format of a document, file, or assortment of bytes. MIME types are defined and standardized in IETF's RFC 6838.
MIME types are important because they help browsers and servers understand how to process a file. When a browser receives a file from a server, it uses the MIME type to determine how to display or handle the content, whether it's an image to display, a PDF to open in a viewer, or a video to play.
MIME types consist of a type and a subtype, separated by a slash (e.g., text/html, image/jpeg, application/pdf). Some MIME types also include optional parameters.
How do I find the MIME type for a file?
You can check the file extension or use a file identification tool such as file --mime-type on the command line. Many programming languages also provide libraries to detect MIME types.
Why can one extension have multiple MIME types?
Different programs and historical usage may assign various MIME identifiers to the same file format. Listing them together helps maintain compatibility across tools.