66+ ARDMS questions answered.

SPI · Study Resources

Do I need a separate Physics book, or is an integrated SPI resource enough?

If this is your very first ARDMS exam — which for most candidates is SPI — I'd recommend a resource that covers Physics on its own, and working through it step by step. Once you've already passed SPI and move on to a specialty exam (Abdomen, Breast, and so on), those exams do include some physics-related questions, but not at a high weight — a short summary or an integrated resource is enough at that point.

SPI · Study Time

How many weeks or months does it usually take to pass SPI?

Two different timelines for two different situations. If you can study full-time with no other obligations, the timeline really comes down to how intensively you work — some of my own students passed within two weeks, and quite a few passed with strong scores within a month. If you're working, raising kids, or juggling other responsibilities, plan for roughly 3 months if this is your first time preparing for SPI.

SPI · Study Resources

Note-taking vs. repeated practice questions — which is more efficient for SPI?

Any advice on this is just a reference point, since no one else actually knows how you learn — you have to figure that out yourself first. Concept-first learners, who need to fully understand one idea before moving to the next, tend to do well with note-taking: work through one concept at a time and write it out. It takes longer, but what you learn this way tends to stick for a long time. Pace-first learners, who'd rather quickly grasp the core idea and review it repeatedly — even just by rereading — and who like jumping straight into practice questions to learn by doing, tend to do better with repeated question-solving: test, spot the gap, patch it immediately.

SPI · Exam Strategy

Are there many calculation problems in SPI Physics, or mostly concept questions?

You can only bring paper and a pen into the exam room, not a calculator. That alone tells you the math involved can't require one — what you'll see is simple hand-arithmetic (basic multiplication and division), barely more than that. A couple of harder calculation questions can show up as exceptions, but the overall share of calculation-based questions is small, and even those tend to be simple enough to work out by eye.

SPI · Study Resources

URR or MUT for SPI — do I need both?

You probably don't need both. It comes down to your learning style: MUT fits concept-first learners who need full understanding before moving on, URR fits pace-first learners who'd rather repeat practice questions and keep moving.

SPI · Study Resources

Prepry vs URR for SPI — which is closer to the real exam?

I haven't personally used Prepry, so I can't give a direct side-by-side comparison with URR. But here's the more important point, and it applies to any resource: ARDMS doesn't publish an official study guide, so every commercial resource — Prepry, URR, or anything else — is really someone's prediction of what the exam might look like, not a guaranteed match to the real thing.

SPI · Study Resources

Has anyone passed SPI using only free or cheap materials?

You can find plenty of free PDFs and YouTube lectures covering SPI, and that's genuinely enough to prepare for and pass the exam. That's because ultrasound physics is built on a fixed, already-established set of concepts — like grammar rules — so the material you need to study is the same no matter which source you use. Paying for a resource doesn't get you different or better content for SPI the way it might for Breast or Abdomen, where the material is broader and more detailed, and paid resources can genuinely be higher quality.

SPI · Practice Score

What percentage on URR means I'm in passing range?

Your URR percentage is a reference number, not an absolute one — URR questions aren't identical to the real exam, so a high URR score doesn't automatically guarantee a high score on exam day. It does correlate: scoring higher generally means you're closer to passing. But it's not a fixed conversion, so don't fixate on a specific number. Instead, use what URR actually gives you — repeatable questions with explanations — to study until you're consistently near 100%.

SPI · Practice Score

Should I trust my URR score from the first attempt or after repeating it?

URR questions aren't identical to the real exam, so no single score — first attempt or fifth — is something you should "trust" as a predictor of your exam result. It's a reference number either way. URR is built to be used as a study process, not a simulated test: you take it, review the explanations, retake it, review what you got wrong again, and repeat.

SPI · Study Resources

Can I pass without understanding Physics concepts, just memorizing question patterns?

You can pass by repeatedly solving practice questions without formally studying the underlying physics concepts first — but it depends on your learning type, the same way note-taking versus practice does. If you learn best by doing, picking things up through trial and error works fine for you. If you're a concept-first learner who needs to fully understand one idea before moving on, skipping concept study to just memorize question patterns isn't a good fit for you.