dr. gary becker is the american board of radiology's executive director. >> we've heard about these, you recall, memories come out of the test, write down 20 questions here, you take the next 20 questions. they almost seem like well-organized schemes to skirt the very certification you're trying to ensure. >> i don't think we know how well organized they are. i mean, we have inferential evidence. >> isn't it cheating? >> we would call it cheating. and our exam security policy would call it cheating, yes. >> reporter: and now for the first time in more than ten years, the board is revamping its entire testing procedures, at the same time, cracking down, because so many certified radiologists may have gained their certification, at least partially, because it was so easy to cheat. right now, about half of the written test questions are the same every year. >> we take it seriously. because when we put the stamp of certification on an individual, that means that the public has trusted us to do so. >> and from any of the investigations or inquiries you've done, you don't really have a sense o