See magnetic resonance imaging / dicom images in Ubuntu
When you have taken a magnetic resonance imaging exam you can receive a CD/DVD of the images of your exam. Some of them might be in the dicom format. If you find any folder in your CD with the name dicom, then that is going to be the format. In that CD you might not find any .dcm files (Extension for dicom files) but just files wihtout extension. Nevertheless, since you probably have received multiple images, you will find a lots of files in a given folder, all without an extension or with the .dcm format. If you want to see those images, you can install dicomscope. sudo apt install dicomscope Then just run dicomscope, and a user interface will appear, then use the open option to find your files. On the other hand, if you want to convert that format to a visible one for any application use: mogrify -format png *.dcm #If your files end with dcm mogrify -format png * #If your file doesn't have