Pass Your SPI Exam—Guaranteed
Master ultrasound physics with 1,150+ questions and video lessons.
The SPI exam is required for every ARDMS credential. Prepry breaks down complex physics concepts into digestible lessons so you can pass with confidence.
Comprehensive Physics Coverage
Master Every SPI Topic
Our question bank covers all ARDMS SPI content specifications with detailed explanations.
Sound Wave Fundamentals
- Frequency & wavelength
- Propagation speed
- Acoustic impedance
- Attenuation
Transducers & Instrumentation
- Piezoelectric effect
- Array types
- Beam focusing
- Resolution
Doppler Principles
- Doppler equation
- Spectral analysis
- Color flow imaging
- Power Doppler
Image Artifacts
- Reverberation
- Shadowing
- Enhancement
- Mirror image
Image Quality & Optimization
- Gain settings
- TGC/DGC
- Dynamic range
- Persistence
Bioeffects & Safety
- Thermal index
- Mechanical index
- ALARA principle
- Output standards
Everything You Need to Pass
Why Sonographers Choose Prepry for SPI
Pass Guarantee
Complete 80% of SPI questions and don't pass? We'll extend your subscription free until you do. That's how confident we are in Prepry.
1,150+ Physics Questions
Comprehensive question bank covering all SPI content specifications. Each question includes detailed explanations of the physics concepts.
Video Lessons
Visual explanations of complex physics concepts. Finally understand Doppler equations, beam physics, and artifacts.
110-Question Mock Exam
Full-length practice exam that simulates the real SPI testing experience. Timed and formatted just like the real thing.
Track Your Progress
See exactly where you stand on each physics topic. Identify weak areas like Doppler or artifacts and focus your study time.
Web, iPhone & Android
Study physics concepts anywhere—on the web, iPhone, or Android. Perfect for quick review sessions between patients.
Success Stories
Sonographers Who Conquered the SPI
“Physics was always my weakest subject. The Prepry video lessons finally made Doppler equations make sense. Passed my SPI on the first try!”
Michelle S.
RDMS (AB), Class of 2024
“The artifact questions were exactly like the real exam. I felt so prepared walking into the testing center. Prepry is worth every penny.”
Carlos M.
RDMS, Sonography Student
“I failed the SPI twice before finding Prepry. The detailed explanations helped me finally understand the physics, not just memorize formulas. Passed on my third attempt!”
Lauren K.
RVT, Repeat Test Taker
One Price. Every Exam.
Get unlimited access to all exams, questions, and features. Pass or extend free.
Everything included:
- Pass Guarantee — 3 extra months free if you don't pass
- All specialty exams included
- 9,700+ practice questions with detailed explanations
- Video lessons for complex topics
- Study reminders & exam countdown
- Available on Web, iPhone & Android
- Priority email support
Common Questions
Frequently Asked Questions
Ready to Conquer the SPI?
Join 95,000+ learners who trust Prepry. Start your free trial today and master ultrasound physics.