Titan is my flagship board review product. Over 50 hours of lectures covering clinical radiology and physics.

Ronin is a supplemental product - that offers an extensive course on Chest X-Ray and Abdominal Plain Film Interpretation. It has some other random stuff also. This is ideal for the first year radiology resident - or a non-radiologist interested in gaining expertise in basic plain film reading. I promise you this has the most extensive chest x-ray course ever developed.