Read each case in the full-screen viewer (pinch to zoom, drag to pan, Window for brightness). Enter your assigned Reader ID when you start.
Learn to locate the left atrial appendage. Scroll, click where you think it is, then reveal the outline. A warm-up before reading.
Warm-up with the reference reveal so you can self-check. Not scored.
Independent reading, scored against the reference standard. This is the part we analyse.