If you are a midwife preparing to earn the ARDMS Midwife Sonography Certificate, knowing how to study is just as important as knowing what to study.
The Midwife Sonography examination is designed specifically around ultrasound knowledge and skills relevant to midwifery practice. It is not simply a general sonography examination with a few obstetric questions added. The current ARDMS examination content outline places substantial emphasis on focused gynecologic ultrasound, first-trimester obstetric ultrasound, second- and third-trimester obstetric ultrasound, protocols, and operation of the ultrasound system.
For midwives who routinely use point-of-care ultrasound (POCUS), preparing for the examination can also be an opportunity to strengthen clinical scanning skills, image optimization, documentation, and systematic examination techniques.
This guide explains how to approach ARDMS Midwife Sonography Exam preparation, what areas deserve the most study time, how to prepare for the practical component, and how hands-on ultrasound training can complement your exam preparation.
What Is the ARDMS Midwife Sonography Certificate?
The American Registry for Diagnostic Medical Sonography (ARDMS) offers the Midwife Sonography Certificate for qualified midwives who demonstrate knowledge and clinical competence in obstetric and gynecologic ultrasound.
The certification process includes both a written/computer-based examination and a practical examination. ARDMS’s current Midwife Sonography certification guide describes eligibility requirements, the written examination, practical examination requirements, and the pathway to certification.
View the official ARDMS Midwife Sonography information
For candidates, this distinction is important:
Passing the written examination is not the entire certification process.
Successful candidates must also satisfy the practical examination requirements before receiving the Midwife Sonography Certificate.
That means your preparation should begin with both knowledge acquisition and hands-on scanning competency in mind.
How to Prepare for the ARDMS Midwife Sonography Exam
A strong preparation strategy should include five major components:
- Study the official ARDMS content outline
- Review OB/GYN ultrasound anatomy and pathology
- Practice image acquisition and measurement
- Develop ultrasound equipment and optimization skills
- Prepare for the practical examination while studying for the written examination
One of the biggest mistakes candidates make is treating exam preparation as a memorization exercise.
Ultrasound is a hands-on skill.
You need to understand why you are obtaining a particular image, where the anatomy should appear, how to optimize the image, which measurements are appropriate, and how the findings affect the clinical examination.
Start With the ARDMS Midwife Sonography Examination Content Outline
Before purchasing a study guide, enrolling in a course, or creating hundreds of flashcards, download and study the official ARDMS examination content outline.
The current Midwife Sonography Examination Content Outline divides the examination into five major domains.
| Examination Domain | Approximate Weight |
|---|---|
| Focused Gynecologic Ultrasound Exams | 14% |
| Focused First-Trimester OB Exams | 19% |
| Focused Second- and Third-Trimester OB Exams | 35% |
| Protocols | 13% |
| Using the Ultrasound System | 19% |
This distribution immediately tells you where your study time should go.
The largest area is second- and third-trimester OB ultrasound.
At 35%, this domain represents the largest portion of the current content outline.
That does not mean you can ignore first-trimester ultrasound, gynecologic ultrasound, protocols, or equipment.
Instead, it means your study schedule should reflect the relative weight of the examination.
1. Focused Gynecologic Ultrasound Exams
Approximately 14% of the examination focuses on gynecologic ultrasound.
Midwives preparing for the examination should be comfortable with basic pelvic anatomy and systematic evaluation.
Topics identified in the ARDMS content outline include:
- Uterine position
- Uterine measurements
- Assessment of the adnexa
- Endometrial fluid
- Endometrial measurement
- Anterior and posterior cul-de-sac assessment
- IUD location
- Ovarian cysts and masses
- Follicular measurements and assisted reproduction applications
- Transabdominal scanning
- Transvaginal scanning
What should you practice?
Don’t simply memorize normal uterine dimensions or the names of ovarian structures.
Practice identifying anatomy in multiple scanning planes.
You should be able to answer questions such as:
- Where is the uterus?
- What is its orientation?
- Where is the endometrium?
- Where are the ovaries?
- What does a normal ovary look like?
- Can you identify an ovarian cyst?
- Where is an IUD located?
- When would a transabdominal approach be useful?
- When is transvaginal imaging preferable?
- How should the structure be measured?
The goal is to develop pattern recognition combined with proper scanning technique.
2. First-Trimester Ultrasound
First-trimester ultrasound represents approximately 19% of the Midwife Sonography examination.
This is a particularly important area for midwives because first-trimester ultrasound frequently involves questions about pregnancy location, viability, gestational age, and early pregnancy anatomy.
The current ARDMS content outline includes topics such as:
- First-trimester obstetric examinations
- Double decidual sac sign
- Yolk sac identification
- Mean sac diameter
- Crown-rump length
- Failed pregnancy
- Anembryonic gestation
- Abnormal yolk sac findings
- Embryonic or fetal demise
- Ectopic pregnancy
- hCG correlation with abnormal pregnancies
- Transabdominal scanning
- Transvaginal scanning
First-Trimester Study Tip
Do not study first-trimester ultrasound as a collection of isolated images.
Think about the sequence of an examination.
For example:
Is there a pregnancy?
↓
Is the pregnancy intrauterine?
↓
What structures should be visible based on gestational development?
↓
Is an embryo present?
↓
Is cardiac activity identified when expected?
↓
Can gestational age be assessed appropriately?
↓
Are there findings suggesting an abnormal or nonviable pregnancy?
This clinical framework makes the material easier to remember and helps you apply knowledge to scenario-based questions.
3. Second- and Third-Trimester Ultrasound
This is the largest examination domain, representing approximately 35% of the current Midwife Sonography examination.
Candidates should expect to devote significant study time to this area.
The ARDMS content outline includes:
- Second-trimester obstetric examinations
- Third-trimester obstetric examinations
- Fetal lie
- Fetal presentation
- Placental location
- Multiple gestations
- Amniotic fluid assessment
- Biophysical profiles
- Biparietal diameter (BPD)
- Head circumference
- Abdominal circumference
- Femur length
- Amniotic fluid index (AFI)
- Cervical length
- Cervical insufficiency/incompetence
- Evaluation of bleeding
- Fetal demise
- Abnormal amniotic fluid volume
- High-risk pregnancy examinations
- Maternal and fetal complications
- Appropriate transabdominal scanning techniques
Know Your Fetal Biometry
Fetal biometry is one of the areas where memorization alone is not enough.
You need to understand how to obtain an appropriate measurement.
For each biometric parameter, study:
Biparietal Diameter — BPD
Understand:
- Appropriate fetal head plane
- Caliper placement
- What anatomy should be visible
- How to recognize an incorrect plane
- Why measurement technique matters
Head Circumference — HC
Understand:
- Appropriate head plane
- Skull contour
- Required landmarks
- Caliper/ellipse placement
- Common measurement errors
Abdominal Circumference — AC
Understand:
- Appropriate abdominal plane
- Required landmarks
- Symmetry
- Caliper placement
- How fetal position can affect image acquisition
Femur Length — FL
Understand:
- Identification of the femur
- Appropriate long-axis imaging
- Caliper placement
- Avoiding measurement of an inappropriate structure
The key question should always be:
“Does this image demonstrate the correct plane and landmarks for the measurement?”
That mindset is far more valuable than memorizing numbers without understanding how the image was obtained.
Amniotic Fluid Assessment
Amniotic fluid assessment is another important component of the examination.
Candidates should understand:
- AFI
- Appropriate measurement technique
- What constitutes an appropriate fluid pocket
- Why fetal parts and cord matter when selecting a pocket
- Abnormal amniotic fluid volume
- How amniotic fluid assessment fits into surveillance examinations
The ARDMS content outline specifically includes AFI and abnormal amniotic fluid volume within the second- and third-trimester domain.
Biophysical Profile Preparation
If you perform biophysical profiles in your practice, don’t limit your studying to memorizing the components.
Practice thinking through the entire examination.
Review:
- Fetal breathing
- Fetal movement
- Fetal tone
- Amniotic fluid
- Nonstress testing when applicable to the overall clinical assessment
- Appropriate documentation
- How ultrasound findings are obtained and recorded
You should be able to recognize whether an image or clip demonstrates the intended fetal activity.
Placenta, Presentation, and Multiple Gestation
Candidates should also be comfortable evaluating:
- Placental location
- Fetal lie
- Fetal presentation
- Multiple gestations
Practice identifying these findings in different fetal positions.
A strong ultrasound practitioner learns to adapt scanning technique rather than expecting every patient to present with textbook anatomy.
4. Ultrasound Protocols
Protocols represent approximately 13% of the Midwife Sonography examination.
This section is particularly important because it connects individual ultrasound images to the complete examination.
Study:
- Appropriate examination protocols
- Required images
- Appropriate measurements
- Documentation
- Examination sequencing
- Clinical indications
- When additional images are necessary
- Recognizing when a limited study does not answer the clinical question
Don’t study protocols as checklists alone.
Ask yourself:
“What clinical question am I trying to answer?”
Then determine:
“What images and measurements are necessary to answer it?”
This approach will help you develop more reliable scanning habits.
5. Using the Ultrasound System
Approximately 19% of the current examination addresses use of the ultrasound system.
This is one of the most frequently underestimated areas of preparation.
Being able to recognize anatomy is not enough.
You need to understand how the ultrasound machine affects the image.
Review:
- Transducer selection
- Depth
- Gain
- Time-gain compensation
- Focus
- Frequency
- Overall image optimization
- Magnification
- Image orientation
- Doppler concepts
- Color Doppler
- Spectral Doppler when applicable
- Artifacts
- Measurement tools
- Image labeling
- Documentation
- Image storage
The ARDMS SPI content outline also emphasizes image optimization, Doppler concepts, examination performance, transducer management, and clinical safety/quality assurance.
Even though the Midwife Sonography examination is distinct from the SPI examination, reviewing foundational ultrasound physics and instrumentation concepts can strengthen your overall sonography knowledge.
Ultrasound Physics: What Midwives Should Review
You do not necessarily need to become a physicist to prepare for the Midwife Sonography examination.
However, you should understand the practical physics concepts that influence the images you obtain.
Review:
Frequency
Understand the relationship between frequency, penetration, and resolution.
Wavelength
Know the relationship between frequency and wavelength.
Attenuation
Understand why ultrasound energy decreases as it travels through tissue.
Reflection
Understand why interfaces between tissues produce echoes.
Acoustic shadowing
Know how and why strong attenuators can produce posterior shadowing.
Enhancement
Understand why fluid-filled structures can demonstrate increased posterior brightness.
Reverberation
Recognize common reverberation artifacts.
Resolution
Understand:
- Axial resolution
- Lateral resolution
- Temporal resolution
Doppler
Review:
- Doppler shift
- Angle dependence
- Aliasing
- Scale
- PRF
- Wall filter
- Gain
- Color box
- Sample volume
- Spectral waveform interpretation
The goal is not merely to define these terms.
You should be able to answer:
“What should I change on the machine to improve this image?”
Common Ultrasound Artifacts You Should Recognize
Artifacts are important because they can either provide useful information or create misleading images.
Review:
- Acoustic shadowing
- Posterior enhancement
- Reverberation
- Mirror-image artifact
- Edge shadowing
- Ring-down artifact
- Comet-tail artifact
- Refraction
- Side lobes
- Grating lobes
- Aliasing
For each artifact, learn:
What causes it?
What does it look like?
How can it affect interpretation?
Can you reduce or eliminate it?
This is much more useful than memorizing artifact names independently.
How Much Hands-On Scanning Practice Do You Need?
This is one of the most important questions for anyone preparing for the ARDMS Midwife Sonography examination.
The answer is simple:
As much deliberate practice as possible.
Reading about ultrasound is not equivalent to performing ultrasound.
A candidate may know exactly what the fetal head should look like but still struggle to obtain the correct plane.
Another candidate may recognize an ovary in an image but struggle to locate the ovary on a real patient.
Hands-on scanning bridges that gap.
Practice the Complete Examination—Not Just Individual Images
When you practice, don’t only ask:
“Can I find the fetal heart?”
Instead, practice completing an organized examination.
For example:
- Review the indication.
- Confirm patient information.
- Select the appropriate transducer.
- Position the patient.
- Establish orientation.
- Perform a systematic survey.
- Obtain required images.
- Optimize each image.
- Perform appropriate measurements.
- Save and label images.
- Review the examination for completeness.
- Document findings according to your practice protocol.
This creates repeatable scanning behavior.
Learn to Optimize the Image Before You Measure
One of the most important habits to develop is:
Do not measure a bad image.
Before placing calipers, ask:
- Is the anatomy centered?
- Is the correct plane demonstrated?
- Is the depth appropriate?
- Is the image adequately magnified?
- Is the gain appropriate?
- Is the focal zone appropriate?
- Are the necessary landmarks visible?
- Is the structure being measured clearly defined?
A technically poor image can produce a technically poor measurement.
Prepare for the Practical Examination
The ARDMS Midwife Sonography certification process includes a practical examination after the written examination. ARDMS’s current certification guide indicates that candidates must document successful completion of eight cases across defined domains through direct observational assessments, with a combination of observational assessment and simulation permitted under specified circumstances.
The practical component is therefore not something you should leave until after passing the written examination.
Start building your scanning competency early.
The ARDMS guide states that practical experience can be acquired before passing the computer-based examination and may be completed within the specified timeframe before or after passing the written examination.
Always verify the current ARDMS requirements before beginning your practical documentation because certification requirements and policies can change.
Build a Study Schedule
A structured study schedule is much more effective than attempting to study everything simultaneously.
Here is an example of a 12-week ARDMS Midwife Sonography study plan.
Weeks 1–2: Ultrasound Fundamentals
Review:
- Basic ultrasound physics
- Transducers
- Frequency
- Resolution
- Gain
- Depth
- Focus
- Artifacts
- Doppler fundamentals
- Image optimization
Spend time at the ultrasound machine practicing these adjustments.
Weeks 3–4: First-Trimester Ultrasound
Focus on:
- Gestational sac
- Yolk sac
- Embryo
- Crown-rump length
- Cardiac activity
- Pregnancy location
- Early pregnancy failure
- Ectopic pregnancy
- Transvaginal scanning
- Transabdominal scanning
Practice identifying normal and abnormal first-trimester images.
Weeks 5–6: Second- and Third-Trimester Anatomy
Study:
- Fetal lie
- Presentation
- Placenta
- Multiple gestation
- Amniotic fluid
- Basic fetal anatomy
- Fetal head
- Abdomen
- Femur
- Cervix
Spend substantial hands-on time obtaining these images.
Weeks 7–8: Fetal Biometry and Surveillance
Focus on:
- BPD
- HC
- AC
- FL
- AFI
- Cervical length
- Biophysical profile
- High-risk pregnancy ultrasound
- Abnormal fluid volume
- Fetal demise
Practice obtaining measurements rather than simply reading about them.
Weeks 9–10: Gynecologic Ultrasound and Protocols
Review:
- Uterus
- Endometrium
- Ovaries
- Adnexa
- IUD
- Ovarian cysts
- Pelvic fluid
- Transvaginal scanning
- Transabdominal scanning
- Gynecologic protocols
Practice completing a systematic pelvic examination.
Weeks 11–12: Integration and Practice
Use this period to:
- Take practice questions
- Review weak areas
- Practice complete examinations
- Review measurement technique
- Review ultrasound physics
- Practice image optimization
- Work through clinical scenarios
- Review practical examination requirements
- Complete mock examinations
Use Active Recall Instead of Just Reading
One of the best ways to study ultrasound is to test yourself.
Instead of reading:
“The fetal abdominal circumference is obtained at the appropriate abdominal plane.”
Ask yourself:
“Show me the correct abdominal circumference plane.”
Then look at an image and identify it.
Ask:
“What landmarks should I see?”
“Where do the calipers go?”
“What makes this image unacceptable?”
This converts passive knowledge into practical scanning knowledge.
Use Case-Based Learning
Case-based learning is especially useful for midwives because ultrasound is inherently clinical.
Instead of studying:
Ectopic pregnancy
Study:
A patient presents with early pregnancy and pelvic pain. The hCG level is elevated. What should you evaluate with ultrasound? What findings would concern you? What structures should be identified? What would change your next step?
Instead of studying:
Oligohydramnios
Ask:
How would you assess amniotic fluid? What constitutes an appropriate measurement pocket? How would you document the examination?
This style of studying encourages you to integrate:
history + indication + anatomy + technique + measurements + interpretation + documentation.
Create an ARDMS Midwife Sonography Study Notebook
A dedicated study notebook can make preparation much more organized.
Consider dividing it into five sections:
Section 1 — Gynecology
Include:
- Normal anatomy
- Measurements
- Pathology
- IUD
- Adnexa
- Transvaginal scanning
Section 2 — First Trimester
Include:
- Normal developmental findings
- Measurements
- Viability
- Pregnancy location
- Early pregnancy complications
Section 3 — Second and Third Trimester
Include:
- Fetal anatomy
- Placenta
- Presentation
- Biometry
- Amniotic fluid
- Cervix
- BPP
- High-risk applications
Section 4 — Protocols
Include:
- Examination sequences
- Required images
- Measurements
- Documentation
Section 5 — Equipment and Physics
Include:
- Controls
- Optimization
- Artifacts
- Doppler
- Physics
- Safety
This makes it easy to identify which areas still need work.
Don’t Forget Ultrasound Safety
Ultrasound is generally considered a safe imaging modality when appropriately used, but ultrasound operators should understand output, exposure, and safety principles.
Review:
- ALARA principles
- Thermal effects
- Mechanical effects
- Thermal Index
- Mechanical Index
- Appropriate exposure
- Appropriate use of Doppler
- Avoiding unnecessary scanning time
The broader ARDMS SPI content outline specifically includes potential bioeffects and clinical safety/quality assurance concepts.
Know the Difference Between Scanning and Diagnosing
Midwives using point-of-care ultrasound should have a clear understanding of the purpose and scope of their ultrasound examinations.
Your examination preparation should include understanding:
- The clinical indication
- What the examination is designed to evaluate
- What the examination cannot establish
- When additional imaging is indicated
- When consultation or referral is appropriate
- Appropriate documentation
- Practice-specific protocols
- State and institutional requirements
Certification does not replace the need to practice within your professional scope, organizational policies, applicable laws, and clinical privileges.
Choose Ultrasound Training That Includes Hands-On Practice
An online ultrasound course can provide an excellent foundation for:
- Ultrasound physics
- Anatomy
- Image interpretation
- Protocols
- Documentation
- Clinical applications
However, hands-on scanning adds another dimension.
You need to physically learn how to:
- Hold the transducer
- Sweep through anatomy
- Rotate the probe
- Fan through structures
- Rock and tilt
- Apply appropriate pressure
- Change depth
- Adjust gain
- Optimize the focal zone
- Obtain standardized images
- Place accurate measurements
This is why hands-on ultrasound education can be particularly valuable for midwives preparing for certification.
Ultrasound for Women’s Health Providers offers online foundational ultrasound education as well as instructor-led hands-on scanning education for women’s health providers.
Explore ultrasound education and hands-on training for women’s health providers
What Should You Look for in an ARDMS Midwife Ultrasound Preparation Course?
Not every ultrasound course is designed around the needs of midwives.
When evaluating a course, look for education that includes:
1. OB/GYN-specific content
The course should address the anatomy, examinations, measurements, and clinical scenarios you are likely to encounter.
2. Ultrasound physics
You should understand enough physics to operate and optimize the machine effectively.
3. Hands-on scanning
Look for opportunities to scan real patients with experienced instructors.
4. Small-group instruction
Small groups allow instructors to identify scanning errors and provide individualized feedback.
5. Measurement practice
You should practice the actual measurements you will need in clinical practice.
6. Protocol-based education
The course should teach you how to perform complete examinations rather than simply locate individual structures.
7. Practical examination preparation
If certification is your goal, make sure you understand how the practical requirements fit into your overall preparation.
10 Common Mistakes When Preparing for the ARDMS Midwife Sonography Exam
Mistake #1: Studying only pathology
Knowing pathology is important, but the examination also assesses examination technique, protocols, measurements, equipment, and normal anatomy.
Mistake #2: Ignoring physics
You don’t need to become an ultrasound physicist, but you do need to understand image optimization and equipment controls.
Mistake #3: Only watching ultrasound videos
Watching someone else scan is helpful.
It does not replace scanning yourself.
Mistake #4: Memorizing measurements without learning technique
Knowing the name of a measurement is different from being able to obtain a technically appropriate image.
Mistake #5: Ignoring gynecologic ultrasound
The Midwife Sonography examination includes a dedicated gynecologic ultrasound domain.
Mistake #6: Focusing exclusively on first trimester
First trimester is important, but second- and third-trimester OB ultrasound represents the largest examination domain.
Mistake #7: Waiting until after the written examination to think about practical skills
The practical component is part of the certification pathway, so hands-on competency should be developed early.
Mistake #8: Practicing only on ideal patients
Real-world scanning involves obesity, fetal position, abdominal scarring, bowel gas, fibroids, limited windows, and other challenges.
Practice adapting.
Mistake #9: Not reviewing the official content outline
The official ARDMS content outline should be your primary roadmap.
Mistake #10: Assuming a course guarantees certification
No course can guarantee a passing score or certification.
Use educational programs to build knowledge and skills, while relying on ARDMS for the current certification requirements and examination policies.
How Long Should You Study for the ARDMS Midwife Sonography Exam?
There is no single correct answer.
Your preparation time depends on:
- Previous ultrasound experience
- Frequency of scanning
- Type of ultrasound examinations you perform
- Familiarity with ultrasound physics
- Comfort with fetal biometry
- Experience with gynecologic ultrasound
- Access to hands-on scanning
- Previous formal ultrasound education
- Time available each week
A midwife who scans several times each week may require a different preparation schedule than someone who completed an ultrasound course several years ago but rarely scans.
For many candidates, a structured 8–12 week study period can provide a useful framework, but the most important factor is not the number of weeks.
It is the quality and consistency of practice.
A Simple Weekly Study Formula
If you have approximately five hours per week, consider:
2 hours — Content review
Read your study materials and review the ARDMS content outline.
1 hour — Practice questions
Use questions to identify weak areas.
1–2 hours — Hands-on scanning
Practice obtaining images and measurements.
If you can scan more frequently, even better.
Short, consistent scanning sessions can be more valuable than one large scanning session every few weeks.
Your Final Week Before the Exam
The final week should not be about learning every topic you have never seen.
Instead:
Review your weak areas.
Go back to the subjects where you consistently miss questions.
Review image recognition.
Practice identifying:
- Normal anatomy
- Abnormal findings
- Correct measurement planes
- Incorrect measurement planes
- Artifacts
- Appropriate protocols
Review equipment controls.
Make sure you understand what each major control does and when you would adjust it.
Review physics.
Focus on practical concepts that affect image quality and Doppler.
Avoid excessive cramming.
The goal is to arrive at the examination rested and confident.
The Day Before the ARDMS Midwife Sonography Exam
Avoid trying to learn an entirely new subject the night before.
Instead:
- Review your condensed notes.
- Review major measurements.
- Review common artifacts.
- Review physics concepts.
- Review your weakest topics.
- Confirm your testing information.
- Get adequate sleep.
- Prepare what you need for the testing center.
Most importantly, trust the preparation you have already completed.
Frequently Asked Questions About the ARDMS Midwife Sonography Exam
Is there an ARDMS ultrasound certification specifically for midwives?
Yes. ARDMS offers the Midwife Sonography Certificate, which is specifically designed around midwife sonography practice. The certification process includes eligibility requirements, a written/computer-based examination, and a practical examination.
What subjects are on the ARDMS Midwife Sonography examination?
The current content outline includes five domains:
- Focused gynecologic ultrasound exams — 14%
- Focused first-trimester OB exams — 19%
- Focused second- and third-trimester OB exams — 35%
- Protocols — 13%
- Using the ultrasound system — 19%
What is the largest section of the Midwife Sonography exam?
Focused second- and third-trimester OB examinations represent the largest domain at approximately 35% of the examination.
Do I need to study ultrasound physics?
Yes. The Midwife Sonography content outline includes use of the ultrasound system, and understanding ultrasound physics helps you optimize images and understand artifacts. The ARDMS SPI content outline also emphasizes image optimization and Doppler concepts.
Is hands-on ultrasound training important?
Yes. The certification process includes a practical examination, and hands-on practice is essential for developing image acquisition, measurement, and scanning skills. ARDMS allows practical experience to be acquired within the specified certification pathway before or after the written examination.
Can I prepare for the written and practical examinations at the same time?
Absolutely—and doing so can be advantageous. Studying an examination protocol while practicing it on the ultrasound machine reinforces both theoretical knowledge and technical skill.
Does passing the written examination mean I am certified?
No. Passing the written examination is one component of the Midwife Sonography certification pathway. Candidates must also complete the practical examination requirements and other applicable certification requirements.
Where can I find the official ARDMS examination requirements?
The ARDMS website should be your primary source for current eligibility requirements, examination information, application procedures, and certification policies.
Final ARDMS Midwife Sonography Exam Preparation Checklist
Before your examination, make sure you can confidently:
- Explain basic ultrasound physics.
- Select appropriate transducers.
- Optimize ultrasound images.
- Recognize common ultrasound artifacts.
- Perform a systematic first-trimester ultrasound examination.
- Identify the gestational sac and yolk sac.
- Obtain an appropriate crown-rump length.
- Recognize findings concerning for early pregnancy failure.
- Understand the ultrasound evaluation of ectopic pregnancy.
- Perform a systematic second-trimester examination.
- Perform a systematic third-trimester examination.
- Determine fetal lie and presentation.
- Identify and document placental location.
- Evaluate amniotic fluid.
- Perform fetal biometry.
- Obtain BPD, HC, AC, and FL measurements correctly.
- Understand cervical length measurement.
- Perform or understand the components of a biophysical profile.
- Evaluate multiple gestations.
- Perform a focused gynecologic ultrasound examination.
- Identify the uterus and adnexa.
- Evaluate the endometrium.
- Identify IUD location.
- Recognize common ovarian cystic findings.
- Understand transabdominal versus transvaginal scanning.
- Follow appropriate ultrasound protocols.
- Label and document images appropriately.
- Understand ultrasound safety principles.
- Understand the ARDMS practical examination requirements.
- Have sufficient hands-on scanning experience to perform examinations systematically.
The Best Preparation Combines Knowledge With Practice
Preparing for the ARDMS Midwife Sonography Exam is about much more than memorizing ultrasound terminology.
The strongest candidates combine:
Knowledge + image recognition + scanning technique + measurement accuracy + equipment optimization + clinical reasoning.
Start with the official ARDMS content outline. Use the percentage breakdown to prioritize your study time. Review normal anatomy before pathology. Practice measurements repeatedly. Learn how to optimize images rather than simply accepting whatever appears on the screen. And, most importantly, develop your hands-on scanning skills alongside your written examination preparation.
For midwives, ultrasound can become a powerful extension of clinical assessment—but competence comes from structured education, deliberate practice, appropriate protocols, and continued experience.
If you are preparing for the Midwife Sonography Certificate, don’t wait until you feel “ready” to start scanning.
Study the material. Get your hands on the transducer. Practice the protocols. Review your images. Correct your technique. Then do it again.
That is how ultrasound knowledge becomes ultrasound competency.


