DCM files are image files in the so-called DICOM format. The DICOM format (Digital Imaging and Communications in Medicine) is an open standard for the exchange of information in medicine. DICOM images are lossy or lossless in TIFF or JPEG format and are embedded in the DCM file.
In addition to images from, for example, MRI, ultrasound, X-ray and CT devices, the files may also contain segmentation, patient data, findings and image registrations. Also 3D data is possible. At the same time, the DICOM standard also represents the protocol standard that is implemented in almost every medical device for imaging and image processing procedures.
In addition, DICOM forms the basis for the PACS digital image archiving system in hospitals and clinics (Picture Archiving and Communication System). Other, often used extensions for dicom files are dic and dicom. Partially the ending is omitted altogether.