dcm The .dcm extension files are raster image format files that are universally used by the medical community for creating and storing body scans of patients. This format was developed by NEMA (National Electrical Manufacturers Association) and is primarily associated with the DICOM (Digital Imaging and Communications in Medicine) image format files.
jpg The .jpg filename extension refers to digital photography files or digital images that are associated with the JPEG file format specification. The joint photographic experts group, or JPEG for short, is a file format from the 'lossy image' class of image formats. Many devices including smartphones with inbuilt cameras and professional digital SLR cameras support the JPEG/Exif file format natively. Such support allow images captured on these devices to be stored directly into the jpg format without conversion. Efforts towards standardization of the JPEG format first begun in 1992 with ISO/IEC 10918-1:1994