ESR Level I/II Map
- The European Society of Radiology (ESR) curriculum splits training into levels — broadly, a foundational/general "Level I" tier and a more specialised "Level II" tier — so a trainee knows roughly when in their training a topic shows up.
- "Level I" is the bread-and-butter stuff every radiologist should handle: the common conditions, the standard studies, the don't-miss emergencies.
- "Level II" is the deeper, more subspecialised material — advanced techniques, complex staging, and the entities you meet once you've found your feet.
- This page is a map, not new teaching. It points you from each ESR tier to the pages on this site that match it.
- The level labels are a study scaffold, not a hard wall — real exams and real patients ignore tidy boundaries.
Imagine you've just been handed a map of a giant theme park with hundreds of rides, and someone helpfully scrawled "start gentle, then work up to the loop-the-loops" across the top. That scrawl is, more or less, the entire idea behind the ESR's training levels. The European Society of Radiology publishes a training curriculum that organises what a radiologist learns into stages, so you're not trying to ride the upside-down coaster on day one.
This page is your translator. It takes the ESR's "what should I know by now" framing and lines it up against the pages already on this site.
What "Level I" and "Level II" actually mean
The ESR's framework describes a progression. Early training focuses on a broad, general foundation — call it Level I in spirit — and later training layers on subspecialty depth — call it Level II. I'll be honest with you about the labels: the official documents have evolved over the years and use their own precise wording. So rather than quote a number at you that might be a version out of date, here's the concept, which is the part that actually helps you study.
| Tier | The vibe | What it covers |
|---|---|---|
| Level I (foundational / general) | "Every radiologist needs this." | Common conditions, standard modalities, basic interpretation, and the emergencies you cannot miss. |
| Level II (advanced / subspecialised) | "This is where you specialise." | Advanced techniques, complex staging, and the rarer or more nuanced entities. |
Think of Level I as learning to cook — knife skills, boiling, roasting, not poisoning anyone. Level II is the part where you decide you're going to be the dessert person and start tempering chocolate. You need the first to attempt the second.
How this site is tagged
Under the hood, every page here carries a difficulty level. The more advanced subspecialty pages additionally carry an explicit ESR Level II marker; everything else — the broad foundational and core pages — is your Level I territory by default. So really there's one tag to look for (the Level II flag), and its absence is the signal that you're on Level I ground. That means you don't have to memorise the whole map — you can let the marker do the sorting and just follow your nose.
A few representative signposts:
| If you're working at... | Start with pages like... |
|---|---|
| Level I — interpretation basics | The Four Radiographic Densities and Search Patterns |
| Level I — bread-and-butter chest | Approach to the Chest X-ray and Pneumonia & Consolidation |
| Level I — don't-miss emergencies | Tension Pneumothorax and Aneurysm & Nontraumatic SAH |
| Level II — advanced neuro | Advanced MRI (DWI, Perfusion, Spectroscopy) |
| Level II — advanced body | ILD: A Pattern-Based Deep Dive and Prostate mpMRI & PI-RADS |
How to actually use this map
The trap I want to steer you away from is treating these levels like locked doors. They're not. They're more like the suggested reading order on the back of a series of novels — helpful, but nobody arrests you for skipping ahead.
Don't assume "Level II = on the exam" or "Level I = too basic to revise." Exams and real shifts both blend the tiers cheerfully. A foundational topic done well will save you far more often than a flashy advanced one done shakily.
So my practical advice: anchor yourself in the Level I material until the common stuff feels boring, then climb. If your weekend on call is going to throw a pulmonary embolism or an ischemic stroke at you, those deserve your attention long before the rare subspecialty zebra.
When a curriculum says "Level II," read it as "you'll get more out of this once the basics are automatic" — not "this is the important stuff and the rest is filler." The foundation is the load-bearing wall.
The one thing to remember
The ESR levels are a scaffold for sequencing your learning, not a ranking of what matters. Use them to decide what to study next, lean on the Level II markers scattered across this site to tell the advanced pages from your Level I core, and remember that the boundary between the tiers is drawn in pencil. Build the broad base first; the specialised tower goes up much faster once it has something solid to stand on.