Convert DICM to DCM

Understanding DICM and DCM file formats

DICM and DCM are both associated with the DICOM (Digital Imaging and Communications in Medicine) standard, which is widely used for storing and transmitting medical imaging information. The term DICM refers to the four-byte prefix found at the start of a DICOM file, indicating its compliance with the standard. The DCM file extension is commonly used for DICOM image files. In practice, DICM and DCM files are essentially the same, with the difference being the file extension or the presence of the DICM prefix in the file header.

Why convert DICM to DCM?

Conversion from DICM to DCM typically involves renaming the file extension or ensuring the file is properly formatted as a DICOM file with the correct header. This can be necessary for compatibility with certain medical imaging software or PACS (Picture Archiving and Communication System) solutions that expect the .dcm extension.

How to convert DICM to DCM

Since DICM and DCM files are both DICOM files, conversion is straightforward. You can simply rename the file extension from .dicm to .dcm if the file is already a valid DICOM file. However, to ensure the file is correctly formatted and readable by all DICOM viewers, it is best to use dedicated DICOM software.

Recommended software for DICM to DCM conversion

• GDCM (Grassroots DICOM): A powerful open-source DICOM library and set of tools. Use the gdcmpdf or gdcmanon utilities to check and convert files.
• MicroDicom: A free DICOM viewer for Windows. Open your DICM file, then use File → Save As and select the .dcm extension.
• DCMTK: A collection of libraries and applications implementing large parts of the DICOM standard. Use the dcmconv tool to convert and validate files.

Step-by-step conversion using MicroDicom

1. Open MicroDicom and load your .dicm file.
2. Go to File → Save As.
3. Choose DICOM file (*.dcm) as the output format.
4. Save the file to your desired location.

Conclusion

Converting DICM to DCM is usually a matter of renaming the file extension, but using specialized DICOM software ensures compatibility and proper formatting for medical imaging workflows.