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DICOM vs TIFF
DICOM exchanges medical images and related study and equipment attributes through SOP Classes and Transfer Syntaxes. TIFF is a general raster-image format organized with tags and image directories; it does not replace the DICOM clinical data model.
Which format should you choose?
Use DICOM to exchange medical images between clinical systems while retaining their relationship to studies and attributes. TIFF may suit publishing, printing, general image processing, or generic archiving.
Good fit for DICOM
Storing and exchanging medical images and related examination data · Managing imaging studies in DICOM-aware clinical systems
- Keeping images together with examination and device attributes
- Transferring studies between DICOM viewers and PACS
Good fit for TIFF
Scans and archival image workflows · Print and production images
- High-quality editing and print workflows
- Scans stored with known settings
Basic information
| Field | DICOM | TIFF |
|---|---|---|
| Extension | .dcm | .tif, .tiff |
| MIME type | application/dicom | image/tiff |
| Common uses | Storing and exchanging medical images and related examination data · Managing imaging studies in DICOM-aware clinical systems | Scans and archival image workflows · Print and production images |
| How to open | Use a DICOM medical-image viewer or PACS. If a file does not open, check whether it is a Part 10 file and whether the viewer supports the data set Transfer Syntax; the extension alone is not conclusive. | Open TIFF in an image editor, scanner application, or TIFF-capable viewer. Check compression, color space, and page count when it does not open as expected. |
| Export or convert | JPEG or PNG exports can help with viewing or general sharing, but often carry only rendered pixels. Examination attributes, multiple frames, and original encoding may be lost. For clinical use, check the exported image and metadata, and retain the source DICOM. | For web sharing, export a copy to JPEG, PNG, or WebP. Before conversion, check bit depth, transparency, multiple pages, color management, and any loss from compression. |
Choose by use case
Keeping images together with examination and device attributes
Storing and exchanging medical images and related examination data · Managing imaging studies in DICOM-aware clinical systems
DICOMTransferring studies between DICOM viewers and PACS
Storing and exchanging medical images and related examination data · Managing imaging studies in DICOM-aware clinical systems
DICOMHigh-quality editing and print workflows
Scans and archival image workflows · Print and production images
TIFFScans stored with known settings
Scans and archival image workflows · Print and production images
TIFFKey point 1
DICOM Part 10 connects file meta information with a medical data set representing a SOP Instance. TIFF uses Image File Directories (IFDs) with tags for image data and general metadata.
More on the differencesKey point 2
DICOM pixel representation follows its Transfer Syntax and data-set attributes and is tied to medical object classes. TIFF tags describe samples, color, and compression, not a standardized clinical study, patient, and equipment model.
More on the differencesMore on the differences
Choose DICOM for clinical interchange and preservation of medical-object context. Choose TIFF for general raster workflows when the recipient expects TIFF. Do not assume a TIFF export retains DICOM-equivalent clinical metadata or interoperability.
- DICOM files associate file meta information with a medical data set and SOP Instance. TIFF directories organize raster data and tags without defining DICOM information objects.
- A DICOM transfer syntax and attributes govern pixel encoding and meaning. TIFF supports tagged sample and compression choices, but does not standardize DICOM study or patient relationships.
- Exporting DICOM to TIFF can lose patient and study attributes, multi-frame or hierarchy structure, pixel-value meaning, VOI/LUT, and calibration. Check privacy, burned-in annotations, precision, grayscale/color, orientation, and slice order; retain the source.
Frequently asked questions
Can TIFF replace DICOM in a clinical workflow?
Usually not by itself. TIFF can carry raster pixels, but it does not provide the DICOM clinical object and study model expected by DICOM systems.