Domain 1 · ~10–15% of ASCeXAM

Physical Principles & Instrumentation

Ultrasound physics, Doppler principles, transducer technology, instrumentation, and the artifacts that flow from each. Often the lowest-yield domain to study clinically because it isn't reinforced in the lab — and the highest-yield to drill deliberately for the same reason. NBECIB's anchor module.

Subtopics Placeholder structure — content lead to expand

Ultrasound Basics →Wavelength, frequency, propagation, attenuation. Stub Doppler Principles →PW vs CW, aliasing, Nyquist limit, angle dependence. Stub Transducer Technology →Phased array, harmonic imaging, focusing, resolution. Stub Artifacts →Reverberation, side lobe, mirror, range ambiguity, dropout. Stub Quantification Methods →Bernoulli, continuity, PISA, volumetric methods. Stub

Study this domain Pick a loop

MCQ Bank

NBE-style multiple choice with rationale and reference for every answer.

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Flashcards

High-yield facts: gradients, normal ranges, equation forms, threshold values.

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Echo Cases

Cine loops with clinical stem. Identify the finding, then reveal diagnosis & teaching.

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Domain Mock

Physical-only timed mock — calibrate your pace within this content area.

Why this matters From the project brief

Placeholder — the content lead will replace this with a domain-specific framing that explains why this section rewards (or punishes) the typical ASCeXAM candidate.