I'm an ultrasound tech with 5 years of experience primarily in OB/GYN and I'm studying for my UTC certification. My RDMS is current but the UTC is a separate credential and the exam blueprint looks different enough that I'm treating it like a fresh study effort rather than reviewing what I already know.
The physical principles and instrumentation section is where I'm spending most of my time. I understand the clinical application side well from daily work, but technical parameters — transducer frequencies, resolution tradeoffs, artifact origins — I've absorbed practically rather than academically, so formalizing that knowledge is taking effort. I'm averaging about 75% on practice questions there right now.
For clinical sections, I'm more confident. I've been doing 40-50 practice questions per day for 4 weeks and tracking weak spots in a spreadsheet. The patient care and safety domain felt easy at first but some of the infection control and ergonomics questions are more nuanced than I expected.
My target is to score consistently above 80% across all domains before scheduling the exam. Is that a reasonable threshold, or do people usually sit when they're closer to 75%? I don't want to rush but I also don't want to over-study past the point of diminishing returns.
I did about 1,200 practice questions total over 8 weeks and that felt like the right volume. The last 2 weeks I stopped adding new material and just reviewed wrong answers and flagged concepts. That final review phase was honestly where I improved the most.
The exam felt harder than most third-party practice banks, so aim higher than the threshold that makes you comfortable.
The physical principles section is genuinely the hardest part for most techs. I have 7 years of experience and still had to relearn a lot of the math and physics formally. Budget extra time there regardless of your practice scores.
80% across domains is a solid target. I sat at around 78% average and passed, but I knew my weakest area was physics so I made sure I was above 75% there specifically. Don't let one strong domain mask weakness in another.
Patient care questions tripped me up more than expected too. Some of them are scenario-based and the right answer isn't always the most intuitive clinical response — it's what the standard of practice says. Reading the SDMS guidelines document helped me calibrate.