1. A method of determining integrity of images, comprising: obtaining a Digital Imaging and Communications in Medicine (“DICOM”) image file having both image data and non-image data; generating at least one code based on the non-image data in the DICOM image file; incorporating the code into the image data such that the code is not visually detectable; and verifying the integrity of the image by regenerating the at least one code based on the non-image data available in the DICOM image file and comparing the code incorporated in the image data with the regenerated code.