Path: ABR Core Exam
- The ABR Core Exam is a broad, image-rich test taken partway through radiology residency — it covers every organ system plus physics and non-interpretive skills.
- It is built to test recognition and safe decision-making, not encyclopedic trivia: see the finding, know the next step, don't hurt anyone.
- This path walks you through the site in the rough order that pays off most: physics and safety first, then the interpretive organ systems, then the non-interpretive material people leave for last and regret.
- Physics and non-interpretive skills (NIS) are not optional side quests — they are graded right alongside the chest and the brain.
- Use this as a map, not a syllabus: follow the links, fill the gaps you find, and circle back.
The Core Exam is the radiology version of a buffet where the chef insists you take a little of everything — neuro, chest, physics, ultrasound knobs, statistics — and then asks you to describe each dish back to them. It's daunting because it's wide, not because any single bite is exotic. The good news: almost nothing on it is genuinely obscure. The bad news: there's a lot of "almost nothing," and it all counts.
This page is a guided route through the site for that exam. Think of it as the trail map at the bottom of a hiking area: it doesn't walk for you, but it keeps you from wandering into the same swamp three times.
What the exam is actually testing
Strip away the format and the Core Exam rewards three things: can you recognize the finding, do you know the appropriate next step, and will you keep the patient safe while doing it. That's the lens to read every page on this site through. A textbook wants you to know the disease cold; this exam mostly wants you to spot it, name it, and not do anything dangerous.
The exam blends interpretive material (the organ systems) with physics and non-interpretive skills. People who treat physics and NIS as an afterthought are the people who get a nasty surprise. Budget real time for them.
Because it's so broad, "study everything equally" is a trap. High-volume, high-stakes findings — the ones you'll see daily and the ones that kill people if missed — deserve the most attention. A zebra you'll meet twice in a career does not.
The recommended order
Here's a sequence that tends to pay off, roughly front-loading the foundations that everything else leans on.
| Phase | Focus | Why it goes here |
|---|---|---|
| 1. Foundations | Physics, contrast, radiation safety, interpretation basics | Every later module assumes you understand attenuation, signal, and densities. Build the floor first. |
| 2. High-volume systems | Chest, neuro, abdomen, MSK | The bread and butter — most images, most don't-miss findings. |
| 3. Focused systems | Cardiac, breast, GU, OB-GYN, vascular, head & neck | Narrower but heavily represented; each has its own scoring system to learn. |
| 4. Cross-cutting | Nuclear medicine, ultrasound, peds, IR, emergency/trauma | Modality- and population-specific reasoning. |
| 5. Non-interpretive | Quality & safety, informatics, statistics, professionalism | The part everyone postpones. Don't postpone it. |
Phase 1 — build the floor
Start with X-ray production and walk through the physics topics, because the rest of the exam quietly assumes you know how each image came to exist. Pair that with iodinated contrast and the rest of contrast safety, then radiation protection. Finish the phase with the universal reading skills — the four radiographic densities and search patterns — which are the grammar of everything that follows.
Phase 2 — the high-volume systems
This is where most of your daily reads live, so it's where most of your study time should live too. Begin with the approach to the chest X-ray; the chest is the single highest-volume study in medicine and the exam knows it. Then move into neuro — the approach to the head CT is the gateway — followed by the approach to the abdominal CT and MSK fundamentals like how to describe a fracture.
For each system, learn the approach page before the individual diseases. A structured search pattern catches findings you don't yet have a name for — and the exam loves the finding you almost walked past.
Phases 3–4 — the focused and cross-cutting material
Each focused system tends to come with its own scoring or reporting framework — BI-RADS for breast, the Bosniak categories for renal cysts, TI-RADS for thyroid. The exam likes these because they're objective and easy to write a question around. Learn the logic of each system, not just the category numbers; the logic is what survives a slightly weird case.
Cross-cutting material — nuclear medicine, ultrasound physics, pediatrics, IR, trauma — rewards understanding why the modality behaves the way it does. Ultrasound questions in particular lean on physics, so loop back to ultrasound physics if Doppler still feels like wizardry.
Phase 5 — the part everyone skips
The classic mistake is treating non-interpretive skills (NIS), physics, and statistics as "I'll skim those at the end." They are graded material, they're learnable, and they're some of the most efficient points on the whole exam because the content doesn't change case-to-case. Give them a real, scheduled block — not the leftover hours.
Work through quality and safety, informatics (PACS, DICOM, structured reporting), the sensitivity and specificity family of statistics, and professionalism. This is also where contrast-reaction management and patient-safety material live — high-yield because they're genuinely don't-hurt-anyone topics.
How to use this path
Don't read straight through like a novel. Use the ABR Core Exam Map to see how the site's pages line up with the exam's domains, then attack the domains where you feel shakiest. Follow the cross-links as they appear — they're there precisely because that concept leans on another one.
The Core Exam is wide, not deep. Cover everything to a solid working level, give physics and NIS the respect they're owed, and prioritize the high-volume, high-stakes findings you'll actually meet on shift.
If you remember one thing: breadth beats depth here. The exam isn't trying to find the one disease you don't know — it's checking that you can safely handle the hundred you'll see every week.