# ARDMS SPI Practice Test — 60 Ultrasound Physics Questions (Free 25-Question Version)

> ARDMS SPI practice test — free 25-question diagnostic, no signup; full mock: 60 timed questions, 75 minutes, 70% readiness target. Official SPI is ~110Q / 2h / scaled 555. Text/physics only. Independent — not ARDMS material.

UniPrep2Go's free ARDMS SPI practice test is a 25-question, 31-minute timed diagnostic with a free topic report and answer review — no email, no account. The full mock is 60 questions / 75 minutes on the $5 UniPrep2Go Mock Pass (5 attempts on any mock).

## What is the ARDMS SPI exam?

The Sonography Principles & Instrumentation (SPI) exam from ARDMS (Inteleos) tests ultrasound physics and instrumentation — acoustic variables, transducers and beam formation, Doppler/hemodynamics, artifacts, quality assurance, and bioeffects. Most ARDMS specialty credentials (ABD, OB/GYN, and others) require passing SPI plus a specialty exam. This UniPrep2Go page is a text/physics diagnostic with no image-interpretation items and is not an ARDMS exam.

- Administered by: ARDMS (American Registry for Diagnostic Medical Sonography / Inteleos)
- Official format: Official ARDMS SPI: about 110 multiple-choice questions, 2 hours, scaled pass 555 on a 300–700 scale (verify current Inteleos/ARDMS bulletin). UniPrep2Go check: free 25-question diagnostic, full mock 60 questions, 75 minutes, 70% readiness target — shorter diagnostic, text/physics only.

## Official certification resources

Topic weights and timing follow published ARDMS / Inteleos — Sonography Principles & Instrumentation (SPI) outlines. Verify fees and scheduling on the official site — UniPrep2Go questions are independent study aids.

- [ARDMS — SPI examination](https://www.ardms.org/get-certified/spi/)
- [Inteleos / ARDMS candidate resources](https://www.inteleos.org/)

## Product facts

- Slug: ardms-spi-readiness-check
- Practice test label: ARDMS SPI practice test
- Vertical: imaging (https://uniprep2go.study/mock-exams/v/imaging)
- Family: ultrasound
- Linked deck: ardms-spi-anki-deck
- Linked deck status: available
- Linked deck checkout: https://pixidstudio.gumroad.com/l/ardms-spi-anki-deck?wanted=true
- Status: live
- Access mode: free_timed_mock
- Questions: 60
- Duration: 75 minutes
- Free version: free 25-question / 31-minute diagnostic (1 attempt, no signup); full 60-question mock on Mock Pass
- Free question count: 25
- Free duration: 31 minutes
- Pass threshold: 70%
- Price: Free 25-question diagnostic, then $5 for 5 full attempts
- Pricing note: Your first UniPrep2Go attempt is free: a 25-question timed diagnostic on any exam (Exam or Learn mode, no signup) with the full topic report. Full-length mocks and retakes run on a $5 UniPrep2Go Mock Pass (Gumroad license key): 5 attempts on any mock. After your score, buy the linked Anki deck on Gumroad to drill weak topics with spaced repetition.
- Mock Pass: $5 for 5 attempts on any mock — https://pixidstudio.gumroad.com/l/uniprep-mock-pass
- Exam body: ARDMS
- Search aliases: SPI, ARDMS, ultrasound physics
- Landing page: https://uniprep2go.study/mock-exams/ardms-spi-readiness-check
- Facts JSON: https://uniprep2go.study/api/mock-exams/ardms-spi-readiness-check

## About this free practice test

SPI is the physics gate most ARDMS specialties require before ABD or OB/GYN. This 60-question / 75-minute text check (free 25-question start) scores acoustic variables, transducers and beam formation, Doppler and hemodynamics, and artifacts and bioeffects — including c = fλ, acoustic impedance Z = ρc, and axial resolution about SPL/2. Official SPI is about 110 questions in 2 hours, scaled pass 555. There are no image-interpretation items here. The matching deck is a live $11 / 120-card Anki file. Not an ABD/OB specialty exam and not ARDMS material.

- Built for: Sonography students and working sonographers sitting SPI as the physics gate — not ABD/OB image interpretation and not ARRT sonography.
- Topics: Ultrasound physics basics, Transducers & beam formation, Doppler & hemodynamics, Artifacts, quality & safety

## Report features

- Pass/no-pass readiness verdict
- Weighted topic diagnosis
- Pacing analysis
- Full answer review with explanations
- Linked Anki deck repair plan for no-pass or borderline results

## Question source

Original UniPrep2Go local bank for SPI physics topics. Expanded to 120 unique 2026-10-07 for Mock Pass retakes; Anki live $11/120.

## Structure

- Ultrasound physics basics: 15 questions, target 70%
- Transducers & beam formation: 15 questions, target 70%
- Doppler & hemodynamics: 15 questions, target 70%
- Artifacts, quality & safety: 15 questions, target 70%

## Official source note

Text/physics readiness check aligned to ARDMS SPI themes (no image-interpretation items). Official SPI is about 110 multiple-choice questions / 2 hours / scaled pass 555 on 300–700 (Inteleos) — this check is a shorter 60Q / 75 min diagnostic from a 120 unique bank. Not an ARDMS exam.

## ARDMS Sonography Principles & Instrumentation (SPI) exam facts

- Exam name: ARDMS Sonography Principles & Instrumentation (SPI)
- Administered by: ARDMS / Inteleos
- Questions: About 110 multiple-choice questions (verify current bulletin)
- Time: 2 hours
- Scoring: Scaled 300–700 (Inteleos)
- Passing score: Scaled 555 (verify current ARDMS/Inteleos score report rules)
- Delivery: Pearson VUE test center or other Inteleos-scheduled delivery — confirm when you book
- Content outline effective: Current ARDMS SPI content outline — verify at ardms.org
- Verify current details at: https://www.ardms.org/get-certified/spi/
Official sources:
- ARDMS — SPI examination: https://www.ardms.org/get-certified/spi/
- Inteleos / ARDMS candidate resources: https://www.inteleos.org/

## ARDMS Sonography Principles & Instrumentation (SPI) knowledge domains and weights

| # | Knowledge domain | Weight |
| --- | --- | ---: |
| 1 | Ultrasound physics basics | UniPrep mock 25% (session 15 of 60; bank 30 of 120) |
| 2 | Transducers & beam formation | UniPrep mock 25% |
| 3 | Doppler & hemodynamics | UniPrep mock 25% |
| 4 | Artifacts, quality & safety | UniPrep mock 25% |
## What changed in the current exam cycle

- Confirm current SPI item count, time, and scaled pass in the live ARDMS/Inteleos bulletin — third-party blogs still quote older forms.
- SPI remains physics/instrumentation; image-heavy ABD/OB specialty exams are separate ARDMS sittings.
- UniPrep Anki is live at $11 / 120 unique cards paired with a 60Q timed diagnostic (free 25-question version) from the same 120 bank.
## High-yield ARDMS Sonography Principles & Instrumentation (SPI) facts (commonly tested)

- Official SPI ≈ 110 Q / 2 h / scaled 555; UniPrep’s check is 60 Q / 75 min / 70% from a 120 unique bank (free 25-question version).
- Propagation speed c = fλ; acoustic impedance Z = density × speed.
- Spatial pulse length = n × λ; axial resolution ≈ SPL/2.
- Doppler shift fd = 2 v f0 cosθ / c; shift ≈ 0 at 90°.
- Mechanical index tracks cavitation risk; thermal index tracks heating (ALARA).
## Common ARDMS Sonography Principles & Instrumentation (SPI) candidate questions (Q&A)

### How many questions are on the ARDMS SPI exam?

About 110 multiple-choice questions in 2 hours. The scaled passing score is 555 on a 300–700 scale. UniPrep’s check is a shorter 60-question / 75-minute diagnostic (free 25-question version) drawn from a 120 unique bank.

### Is UniPrep’s SPI check the official ARDMS exam?

No. The 60-question check (free 25-question version) is independent text/physics practice. The matching Anki deck is a live $11 / 120-card .apkg on Gumroad. Not ARDMS/Inteleos material.

### Does SPI include ABD or OB image items?

No. SPI is physics and instrumentation. Abdominal and OB/GYN image interpretation are separate ARDMS specialty exams.


## FAQ

### What is the ARDMS SPI exam?

SPI is the ultrasound physics and instrumentation exam required as part of most ARDMS sonographer credentials, administered by ARDMS/Inteleos.

### How many questions is the official SPI exam?

About 110 multiple-choice questions in 2 hours with a scaled passing score of 555 (300–700). This free UniPrep check is a shorter 60-question / 75-minute diagnostic from a 120 unique bank.

### Does this mock include image interpretation?

No. UniPrep’s SPI check is text/physics only. Specialty ABD/OB image items are separate ARDMS exams.

### Is UniPrep’s SPI check the official ARDMS exam?

No. It is independent practice. The matching Anki deck is a live $11 / 120-card .apkg on Gumroad. Not ARDMS material.

### Is there a free ARDMS SPI practice test?

Yes — your first UniPrep2Go attempt is free, and it can be this one: a 25-question / 31-minute timed diagnostic drawn by the same topic weights, a 70% readiness target, topic scoring, and a full answer review report. No signup, Exam or Learn mode. The full 60-question / 75-minute mock runs on the $5 UniPrep2Go Mock Pass (5 attempts on any mock).

### How many free attempts do I get on this ARDMS SPI practice test?

One. Your first UniPrep2Go attempt is free: a 25-question timed diagnostic on any exam (Exam or Learn mode, no signup) with the full topic report. Full-length mocks and retakes run on a $5 UniPrep2Go Mock Pass (Gumroad license key): 5 attempts on any mock. Every attempt ends with the full topic report and answer review — the report itself is never paywalled.

### How many questions are on this free ARDMS SPI practice test?

This UniPrep2Go practice test has 60 multiple-choice questions timed against a 75-minute target. The free first attempt is a 25-question / 31-minute diagnostic with the same topic weights; the full session runs on Mock Pass. Text/physics readiness check aligned to ARDMS SPI themes (no image-interpretation items). Official SPI is about 110 multiple-choice questions / 2 hours / scaled pass 555 on 300–700 (Inteleos) — this check is a shorter 60Q / 75 min diagnostic from a 120 unique bank. Not an ARDMS exam.

### Why is the free ARDMS SPI practice test 25 questions?

It is a diagnostic: 25 questions drawn by the same topic weights as the full 60-question mock — enough to rank your weakest topics, short enough to finish in 31 minutes in one sitting. With 1–6 questions per topic it is a quick read, not a verdict; for a full-length timed score, run the 60-question / 75-minute mock.

### What do I get for $5?

The UniPrep2Go Mock Pass: 5 full timed attempts on any UniPrep2Go mock, including the 60-question ARDMS SPI session, in Exam or Learn mode. It is a one-time Gumroad license key that works on any device — no subscription. Every attempt ends with the full topic report and answer review.

### What score do you need on this ARDMS SPI practice test?

The pass target on this practice test is 70%. Your report also breaks down performance by topic so you can see weak areas before the real exam.

### Who should take this ARDMS SPI practice test?

Sonography students and working sonographers sitting SPI as the physics gate — not ABD/OB image interpretation and not ARRT sonography.

### Where can I take a ARDMS SPI practice test online?

UniPrep2Go hosts the ARDMS SPI Practice Test — 60 Ultrasound Physics Questions (Free 25-Question Version) at https://uniprep2go.study/mock-exams/ardms-spi-readiness-check with a timed runner and full readiness report.

### Is this official exam material?

No. This is an independent readiness diagnostic from UniPrep2Go. It is not official exam-board material and does not award certification or guarantee a passing score.

### What does the report show after the mock?

Your report shows a pass/no-pass verdict with explanation, topic diagnosis, pacing notes, full question review with explanations, and a repair plan that links to the paid Anki deck on Gumroad for weak-topic drilling.

### Where do the questions come from?

Original UniPrep2Go local bank for SPI physics topics. Expanded to 120 unique 2026-10-07 for Mock Pass retakes; Anki live $11/120.

## Disclaimer

This is an independent readiness diagnostic from UniPrep2Go. It is not official exam-board material and does not award certification or guarantee a passing score.