I used CTC for both the ABR CORE and the written portion of the Canadian exam. Speaking specifically to the Canadian exam it was far better than Primer and other resources I had tried for targeting our MCQ section. It would not be sufficient for Oral exam prep, but its great as a starting point for organizing your knowledge base. He has a fantastic, engaging style of writing which kept me motivated for the long slog through 2 board exams this past year, both of which were successfully passed!

Hey Prometheus, First of all, I just want to say you're a boss. Thanks for making radiology cool and understandable for not just me, but for all the radiology residents across the US. If it wasn't for you, I honestly don't know what I would do. I'd probably be in a heap of trouble.

I passed both the Core and certifying exams largely because of you. You should be proud. You taught me more than anyone else in radiology.

The material tested by the core exam is immense and intimidating. The board review course and the Crack the Core Exam books provided a focused, high-yield method to approach studying for such a seemingly overwhelming exam. I listened to the entire board review course about 4-5 times and read through the review books twice. I also read through the dedicated physics review book, The War Machine, and the case companion books. I am confident that this helped me feel prepared for the core exam, dominate each section and pass the exam with a score well above the passing cut-offs.

Learned a ton from your book, I wish I started using it earlier on. The way you present things just clicks!