Prometheus Lionhart's Radiology Education Super Weapon Radiology

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Clinical Mastery
  • Over 100 Hours Beautifully illustrated and animated Didactic Lectures
  • Ronin Courses Recommended Videos, Lectures, and Practice Case Combinations
  • iRad Interface Practice Cases, Ronin Skills, and "Virtual Readout"
Clinical Mastery The Clinical Mastery Product offers a one of a kind blend of didactic lectures, interactive skill-based sessions, and real world case-based active learning via the one of a kind iRad interface.
Specialty Board Review
  • Over 40 Hours Strategy-based Board Review Lectures Cover Clinical Topics and Physics
  • Question Bank More Than 750 Multiple Choice Questions to Help Refine Your Skills and Expose Weaknesses
Specialty Board Review The Specialty Board Review Product offers a comprehensive video on-demand review course and Q-Bank written by internationally known Master Educator Prometheus Lionhart.

Who's It For? Targeted Materials for All Levels

Novice Interpreter
Medical Providers
Medical Students
Radiology Residents
Practicing Attendings
Education Programs

Clinical Mastery

The old paradigm of learning clinical radiology from books or single slide images in conferences is over.

Prometheus Lionhart has joined forces with Garrett Walters to create a revolutionary teaching strategy combines didactic video lectures centered on anatomy, disease process, location strategies, interdisciplinary knowledge, and the most powerful clinical tool of all – applied biostatistics.

Best of all,  you can apply your knowledge with a growing library of real interactive cases and skill-based challenges. Plus special topics including; search patterns, perception strategies, dictation, and reporting strategies.

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The iRad Interface

No other imaging course offers a tool this powerful. Learn to use a real PACS so that you can practice your skills just like you would in your clinic or hospital.

Mastering radiology is so much more than memorizing disease patterns and appropriate catheter locations. Have you ever tried looking at a chest X-ray after the placement of a line or tube and just can’t find the tip, but then you saw the radiologist find it right away? The true secret to mastering image interpretation involves knowing how to skillfully use a PACS. Use the tools to master the craft.

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Specialty Board Review

The most popular board review course in the United States, written and delivered in its entirety by master educator Prometheus Lionhart.

More than 40 hours of didactic lectures – geared specifically towards the ABR CORE Exam.

On demand video content allows you to watch lectures as many times as you want. You can’t do that in a classroom!

Lectures are paired with a Q-Bank with more than 700 questions.

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Please Enjoy This Sample Lecture

Meet Your Educators

Dr. Prometheus Lionhart, MD

There comes, even to kings, the time of great weariness.  When the speech of men is as empty as the rattle of a jester’s bell, when the sun is copper in the sky, and even the breath of green ocean is no longer fresh.  Upon this hour, there came a great longing within the heart

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Dr. Garrett Walters, MD

Dr. Garrett Walters studied at the University of Virginia for his undergraduate education, where he graduated with honors with a Bachelor in Science in Chemistry with a Specialization in Biochemistry.  He graduated from Virginia Commonwealth University School of Medicine, where after only two years of academic excellence he was inducted into Junior Alpha Omega Alpha

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Choose Your Membership Get access for your entire program. Large volume institutional subscriptions are available to training programs and hospitals.

Clinical Mastery

$29.95/ mo.
100+ Hours of World Class Didactic Video Lectures iRad Cases Ronin Skill Sets New Content Every Week 10% Group Discount Order Now

Board Review

$139/mo. for 3 months
$99/mo. for 6 months
$78/mo. for 12 months
40+ Hours Didactic Board Review Video Lectures Question Bank with More Than 700 Questions Order Now

Hear From Our Students

Adam G

I would like to thank you for writing and continually updating crack the core and war machine. I would be a worse radiologist and would not have passed the core without these books. Your sense of humor and straight to the point explanations are greatly appreciated. For the sake of future residency classes, please continue fighting the good fight.


University of Alberta

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!

Mark Huser

Virginia Mason Medical Center

Worked well for me! Used all the books and the review course~~ it was great! many thanks

Michael Akinyemi

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.

Resident at Vanderbilt University Medical Center

Crack the Core is essential to passing the Core exam. Every resident at my institution used it as their primary resource for both the imaging diagnosis and physics portions of the exam. I felt as prepared as I could have been thanks to Prometheus and his resources. These books will be useful far past the core exam, and I’ve seen many fellows that come from outside programs frequently referencing it. Thanks Prometheus, I couldn’t have done it without you.

Nanda Thimmappa, MD

Assistant Professor of Radiology MU, Columbia , USA

You are a great teacher, and I certainly recommend your chest x-ray videos to all my residents.

Leanne Jones


The cases are great! I’m an advanced practice radiographer in England. I already have a post graduate certificate to report MSK plain film imaging, but I’m currently studying chest and abdomen now. Your platform, videos, and knowledge have been amazing for me. Thank you so much I’m the first in my institution to do the CXR and AXR rep reporting but others will follow me, and I will definitely recommend they use your site.



I’m a really big fan of your chest radiograph course. Without a doubt the best study resource I have ever used. I’m just hoping you will keep creating more content for other topics in radiology (hopefully with lots of iRad cases). This is the future of teaching



The most comprehensive course on chest x-ray out there. All topics are clearly explained and provide a strong foundation for any medical specialist. The chest radiograph course is a fantastic course that I recommend to all my colleagues.



The chest radiograph course is amazing.


South Africa

Concise and well-illustrated lectures, which were easy to follow. Important concepts (i.e. the "radiology toolbox") were explained and reinforced throughout the course. iRad simulates the reader environment well. The iRad cases were interesting, and the clinical readout was helpful in reinforcing the lectures. Overall, I enjoyed the course content and would recommend it to my colleagues in radiology and other branches of medicine! Thanks again for making radiology education accessible, interactive, and fun!



The website is absolutely brilliant, and the effort and awesome work you guys put in is well appreciated :) Thanks again for the awesome resource!



This is such a lovely site. It explains a lot. I am learning a lot of new stuff just with the anatomy alone.

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