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PNM Raw at a glance
PNM Raw
PNM survived because engineers kept needing a no-drama raster family for scripts, fixtures, codecs, and image-processing experiments where the format should not be the hard part.
DCM at a glance
DCM
DICOM grew out of the need to exchange imaging data across scanners, archives, and clinical systems without throwing away the surrounding context that makes a medical image usable in practice.
Format comparison
| Feature | PNM Raw | DCM |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1988 | 1993 |
| Inventor | Jef Poskanzer | ACR-NEMA / DICOM Standards Committee |
| Status | active | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Not supported | Not supported |
| Vector scaling | Not supported | Not supported |
| Camera raw data | Not supported | Not supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use PNM Raw
- Your source file is already in PNM Raw.
- Preserve source expectations before exporting to DCM.
- PNM Raw is commonly used in image workflows.
When to use DCM
- Your target workflow expects DCM.
- Improve delivery compatibility with DCM.
- DCM is commonly used in image workflows.
FAQs
Why convert PNM Raw to DCM?
Convert to DCM when the output must remain part of a medical-imaging workflow, preserving both image data and associated study metadata.
It is the correct target for diagnostic, archival, and interoperable clinical imaging systems.
What changes when converting PNM Raw to DCM?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting PNM Raw to DCM?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.