Everyone that is talking about the unethical behavior of those taking the exams and knowing what questions will be on the test keeps failing to answer this question:
If you fail, why are you allowed to take the test again? You've seen all the questions, you'll remember many of them, and you will use that knowledge to take the test next time. If they are allowed to take the exam, the policy is de facto violated every time a candidate is allowed to re-take an exam. But, they are allowed to re-take the exam. So, they don't really care about the policy and their ridiculous responses ("OH MY GOD! RESIDENTS ARE USING RECALLS! WE HAD NO IDEA!!") are just window dressing and media crap.
Those people not in radiology or radiation oncology (i.e. under the ABR's jurisdiction) have no idea what they are talking about. Look at the information that the ABR provides about the radiation oncology exams:
http://www.theabr.org/ic-ro-study.
There is not one practice question, a link to practice questions, old exam question releases, or anything of the sort that the ABR provides. The oral exam lists every malignancy known, yet those that have taken the exam know that adrenal cancer, ovarian cancer, fallopian tube cancer, and many others are never tested. In fact, if faculty didn't do mock exams with us (based on exams that they have given to other examinees) for the residents, the oral boards would be an utter disaster - the pass rate would be around 20%. But, no one is going to bust on the chair of GU oncology at Harvard or the the leading breast cancer specialist wherever for giving mock exams to residents, even though that by definition is a "recall" and should be illegal. However, since there are no materials given to the residents, no release of old cases, no videos developed by the ABR to show how a case is presented, even the most ethical oncologists in the country are forced to violate the ABR's insane policy (that they don't even believe in, because they allow doctors to re-take the exact same exam) to make sure that more than 1 out of 5 graduating residents are able to get board certified.
This whole thing is such a farce. To have people from other specialties say otherwise is sanctimonious bullcrap. MKSAP is recalls. ABSITE is recalls. QBank is recalls. There is a book for the surgery rotation and shelf exam called "Surgical Recall" that has sold 10s of thousands of copies. You can call it otherwise, and pretend it's different because a company provides it and makes money off of it, but it's the same thing.
The radiologists are being given a bum rap. These are the students and residents that got into medical school, did extremely well during their classes and rotations, rocked the boards, and got into one of the hardest residencies to get into. 99% of them use recalls and that doesn't mean 99% of them are cheaters, unethical, or anything of the sort. They were STUDYING for an exam that has no material that one can study from. It's so easy to call 99% of an entire specialty cheaters, but I dare you to question a board certified diagnostic radiologist on his/her ethics and morality to their face or question their interpretation of images, because you think they wrongly passed a test they should have failed. Seriously, question one of their reads, and then bring up the fact that they likely cheated on their exam so they probably have no idea what they are talking about.