Study guides, physics breakdowns, exam strategies, and credential comparisons — written by credentialed sonographers for SPI exam candidates.
Domain weightings, a proven 6-week study plan, common mistakes, and how to pass on your first attempt.
A breakdown of the official ARDMS content outline — exactly how many questions come from each domain and how to allocate your study time.
The Doppler domain is 22% of the SPI. This guide covers every concept the ARDMS tests — with clear explanations and exam-style examples.
Cut through the noise. These are the physics concepts responsible for the majority of SPI exam questions, explained so they actually stick.
Reverberation, shadowing, comet-tail, mirror image — the ARDMS tests these every time. Learn to identify and explain each one.
A week-by-week schedule built around the ARDMS blueprint, designed to get you exam-ready in 42 days.
The science behind why SonoPrep's flashcard system is built on SM-2 spaced repetition — and how to use it to retain physics concepts long-term.
How to handle tricky ARDMS question stems, eliminate distractors, and keep your pace across 110 questions in 2 hours.
A practical comparison of the four ARDMS specialty credentials — clinical requirements, exam structure, job market, and how to choose your path.
Ready to put this knowledge to work? SonoPrep's exam simulator and flashcard system are built around the exact domains covered in these articles.