DICOMs format is used to store CT-Scan or MRI images, DICOMs contain header information and multidimensional images array. The header normally contains patient information and information about DICOM images.
These images from CT-Scans or MRI contain density values that are stored in images, instead of colors such as RGB or Grayscale, we have Density values between -3000 to +3000. these images have width and height just like any other image, but there can be more than one of these images in a single DICOM file. These images are slices obtain from CT-Scan or MRIs of a patient from different places, such as CT-Scan machine moving up or down and taking images using X-rays.
In CT-Scan these Density values have units of HU, where 0 is water, 200 to 1000 are bones and 2000+ are metals. below zero is air.
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