Interactive Physics Companion

You don’t have to keep reading the same information over and over, hoping it will stick. See it. Work through it. Understand why it works.

15 modules · 65 interactive lessons · SPI Mock Exam Simulator

The Interactive Physics Companion
Don't just read the physics. Work through it.
Two real pieces from the lessons. Tap them yourself.
From the lesson on mechanical transducers
One crystal, swinging to build the image
A mechanical probe has just one crystal. A motor physically swings it back and forth, and each position fires one scan line in a slightly different direction. Tap through and watch the fan build.
The crystal fires once
1 of 21 positions
One position, one direction, one scan line. The crystal is tilted all the way to one side.
Same lesson, testing your thinking
What if that one crystal fails?
Since a mechanical probe has only one crystal doing every job, there is no backup. Before you tap anything, take a guess first.
Guess first
If that one crystal fails, what happens to the image?
One crystal, doing everything
one crystal doing all of it
Every line in that fan came from the same element. It is carrying the whole image on its own.
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EXAM TIP
If a question asks what happens when the PZT fails in a mechanical transducer, it is the whole image, not a band or a patch, because there is only one crystal.

Different concept. Same idea. Work through it until it makes sense.

From the lesson on the receiver
Time gain compensation
Deeper echoes travel further, so they come back weaker and the bottom of the image would fade out. This is the control that corrects it, depth by depth. Watch the sliders work.
TGC SLIDERSTHE IMAGEa TGC sliderthe image at this deptha TGC sliderthe image at this deptha TGC sliderthe image at this deptha TGC sliderthe image at this deptha TGC sliderthe image at this deptha TGC sliderthe image at this deptha TGC sliderthe image at this deptha TGC sliderthe image at this depththe imageshallowdeeppush the deeper sliders further and the bottom catches upeach depth gets its own amount, which is the whole point
Watch how much further the lower sliders have to travel, and watch the bottom of the picture come up to meet the top.
Check yourself
The bottom of your image looks darker than the shallow parts. Which control evens it out?
That's how every lesson works.
  • See the concept
  • Work through it
  • Check yourself
  • Understand why

Now imagine learning physics this way across 65 interactive lessons.

Ready to learn physics this way?

All 65 interactive lessons plus the SPI Exam Simulator.

Choose 6 or 12 months of access

What's inside

The whole thing, start to finish.

Built around the major physics concepts covered across the ARDMS SPI, CCI and ARRT exam outlines, so you can see exactly what you'll be working through.

15modules
65lessons

Those 15 modules fall into six areas:

01

The fundamentals

Foundations of sound, wave parameters, pulsed sound, and how sound interacts with tissue.

02

Transducers & beams

Transducers, sound beams, display modes, and resolution.

03

Imaging & instrumentation

Two-dimensional imaging, instrumentation, image processing, harmonics, and contrast agents.

04

Doppler & hemodynamics

Hemodynamics, spectral, color, and power Doppler, and optimization.

05

Artifacts

What they are, why they happen, and how to tell them apart from real findings.

06

Bioeffects & safety

Bioeffects, ALARA, quality assurance, and professional responsibility.

Swipe through all six areas

The SPI Exam Simulator · Included

Practice for the SPI before exam day.

110 questions. Two hours. Practice under exam-style conditions, then see exactly where you need more review before the real thing.

The score report, showing a score and a percentage for every content area

What you get at the end. Where you stand, area by area.

Practice under exam conditions

110 questions, a two hour timer, structured around the current SPI content distribution.

See where you're weak

Your score, plus a breakdown by content area, so you know what still needs review.

Every option explained

Why the right answer is right, and why each of the others isn't.

We don't just tell you what you got wrong.

See the explanation, then go straight back to the lesson that teaches it. Your results show you what to review while there's still time to strengthen it.

Student success stories

What students and faculty are saying.

From currently enrolled sonography students, program directors and physics instructors using the Companion.

Swipe to read more

Such an easy fantastic way to learn. This should be in every physics class.
● Sonography student
One of my recent graduates used these resources and raved about them.
● Program director
I’m only on the first module and it’s already so easy to understand.
● Sonography student
The moving diagrams, and having to work through it themselves, is what makes it stick.
● Sonography instructor
I think this is a great learning platform. I’m hoping to talk to my program chair about it.
● Sonography instructor

Pick the timeline that fits where you are.

Same Companion. Same full access. Just choose how long you want to keep it.

6 months of access

$99

Best for focused exam prep.

Six months to work through all 65 interactive lessons while preparing for your upcoming physics board exam.

Get 6 months
Best for current students

12 months of access

$139

Use it through class and board prep.

Learn alongside your physics course, then keep the Companion when it's time to prepare for your board exam.

Get 12 months

Both options include all 15 modules, 65 interactive lessons, the SPI Exam Simulator, and future lesson updates during your access period. Instant access on any device.

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