says that it’s worth publishing.

In the media, the term “digital forensics ” usually refers toinvestigations regarding the mining of data stored in digital fashion. Many government and private firms specialize in this activity. In the context of this short commentary, I will use the term “digital forensics ” to mean the activity of discovering unintentional or fraudulent alterations of images (both static and video). Alteration of images is an everyday fact and is commonly used by the popular media. Historically, photo-graphs have been “doctored ” for a long time, and many of them are now regarded as art (just look at those fromMathew Brady and Man Ray!). Why is the American Journal of Neuroradiology (AJNR) in-terested in digital forensics? Immediately after I became Edi-tor-in-Chief, one of our astute reviewers noticed some un-usual “cloning ” in images submitted to AJNR. After some investigation, which involved obtaining the original figures, one of our Senior Editors and I came to the conclusion that these alterations were innocent and did not alter the authors’ results. Alterations of images in scientific journals are com-mon. The most famous one involves the illustrations pub-lished in Science by the South Korean scientists Woo-Suk et al,1 showing lines of stem cells that did not exist. It is this incident that led to some journals now asking for specific de-tails regarding the contributions of each author when amanu-script is submitted. Science is not the only journal to have had such articles published. The Annual Report 2006 of the Offic