TL;DR
Are 3D ultrasounds safe? When performed briefly by a credentialed sonographer using minimum power settings, yes — they're considered reasonably safe by every medical body that has reviewed them. None of those bodies recommend them. All of them allow them. The relevant authorities — the FDA, ACOG, AAFP — have published positions, and we'll cite them verbatim in this article so you can read the source language yourself.
The same answer applies to 4D and HD Live (5D) keepsake scans, since the underlying technology is identical to 3D — only the rendering differs (covered separately in our 3D vs 4D vs 5D guide).
What follows is a longer-form version of our safety page, written as honest editorial. If you want the short version: pick a studio with a credentialed operator, keep the session under 15 minutes, and don't substitute a keepsake scan for medical prenatal care. If you want the long version, read on.
What the FDA actually says
The FDA's position on keepsake ultrasound is the most-cited and most-misquoted statement in this space. Here's what their Ultrasound Imaging page says, verbatim:
"The use of ultrasound solely for non-medical purposes such as obtaining fetal 'keepsake' videos has been discouraged. Ultrasound can heat tissues slightly, and in some cases, it can also produce very small bubbles (cavitation) in some tissues. The long-term effects of tissue heating and cavitation are not known. Because of the particular concern for the fetus, organizations such as the American Institute of Ultrasound in Medicine have advocated prudent use of ultrasound imaging in pregnancy."
"Although there is a lack of evidence of any harm due to ultrasound imaging and heartbeat monitors, prudent use of these devices by trained health care providers is important. Ultrasound can heat tissues slightly. In some cases, it can also produce very small bubbles (cavitation) in some tissues."
"The FDA recommends that pregnant women avoid prenatal ultrasounds for non-medical purposes... However, keepsake images or videos are reasonable if they are produced during a medically-indicated exam, and if no additional exposure is required."
Read carefully, what the FDA is actually saying is:
- There's no confirmed harm from ultrasound in pregnancy.
- Ultrasound does cause measurable tissue heating and microbubble formation. These effects are likely small but are not zero.
- Because we can't rule out long-term effects we haven't yet identified, exposure should be minimized when there's no medical reason for the scan.
- Keepsake imaging that piggybacks on a medical scan (your OB letting you take home a 3D photo) is reasonable.
- Standalone keepsake imaging is discouraged but not banned.
That's a more nuanced position than either "ultrasound is dangerous" or "the FDA approves keepsake scans." The FDA is saying: this is a low-risk activity, but the risk isn't zero, so don't do it casually.
What ACOG says
The American College of Obstetricians and Gynecologists issued Committee Opinion 297 in 2004 (reaffirmed 2015 and still the standing position):
"ACOG strongly discourages the non-medical use of obstetric ultrasonography for psychosocial or entertainment purposes. The use of ultrasonography without a medical indication to view the fetus, obtain a picture of the fetus, or determine the fetal sex is inappropriate and contrary to responsible medical practice. Ultrasound energy delivered to the fetus cannot be regarded as completely innocuous."
ACOG's three stated concerns:
- Lack of medical supervision — keepsake centers may not be staffed by personnel trained to recognize medical issues
- Unidentified biological effects — the long-term studies don't exist yet
- False reassurance — a "the baby looks fine" message from a non-medical scan can lull parents into skipping real prenatal care
ACOG's position is sharper than the FDA's. They go beyond "discouraged" to "inappropriate." But they don't recommend banning the practice — they recommend that when it does happen, it should follow the same prudent-use standards as medical scans.
What the AAFP says
The American Academy of Family Physicians joined the Choosing Wisely campaign with this recommendation:
"Don't perform prenatal ultrasounds for non-medical purposes, for example, solely to create keepsake videos or photographs. Ultrasounds warm the tissues slightly and may, in some cases, cause small pockets of gas to form in body fluids or tissues. The long-term consequences of these effects are still unknown."
The AAFP is the most direct of the three. Their guidance is for clinicians: don't do these scans yourself.
Notice what none of the three bodies says: that keepsake ultrasound is dangerous, that confirmed harm has been documented, or that pregnant women should avoid all keepsake imaging. The position across all three is "discouraged but acceptable when done correctly."
The actual physics: what makes ultrasound different from X-ray
Here's the part that often gets lost. Ultrasound is non-ionizing radiation — it's high-frequency sound waves. X-rays and CT scans are ionizing radiation — they have enough energy to knock electrons off atoms, which is what creates DNA damage and elevated cancer risk.
Pregnancy guidance about avoiding X-rays and CT scans is built on real, well-established harm. Pregnancy guidance about minimizing ultrasound is built on theoretical caution, not documented harm. Those are very different categories of risk.
What ultrasound can do at high power and long duration:
- Tissue heating: ultrasound waves deposit energy as heat. Modern machines limit this, and the FDA caps the thermal index allowed for fetal scanning. A typical 15-minute session causes tissue heating in the fraction-of-a-degree range.
- Cavitation: at high enough power, ultrasound can create microscopic bubbles in tissue. The probability is very low at standard fetal scan settings.
These are real physical effects that warrant ALARA — "As Low As Reasonably Achievable" — exposure standards. They're the reason a 90-minute 3D session on the highest power setting would be a bad idea. They're not the reason to avoid a 15-minute session at standard power.
The real concerns (where keepsake ultrasound can go wrong)
Here is where we want to be very direct, because the actual risks of keepsake ultrasound have less to do with the sound waves and more to do with how the studio is run.
1. Untrained operators
The FDA explicitly notes that risks "may increase with unnecessary prolonged exposure to ultrasound energy, or when untrained users operate the device" (emphasis ours).
A credentialed sonographer (RDMS / ARDMS in the US, ASUM / DMU in Australia, CASE / BMUS in the UK) has been trained on the ALARA principle. They know how to minimize power settings, keep scan time short, and recognize when to stop. An uncredentialed operator who learned to push buttons over a weekend may not.
This is the single biggest variable in keepsake-scan safety. We require credentials on every studio in our directory for exactly this reason. If you book outside our network, ask the studio who is operating the machine and what their credential is. If they can't give you a clear answer, walk away.
2. Prolonged exposure
A medical scan typically takes 15–30 minutes. A keepsake scan should take 10–15 minutes. Some studios offer "deluxe" 30- or 45-minute sessions, with the pitch being "more time to capture the perfect shot." That's a worse safety profile, not a better experience.
The right scan length is short. If the baby isn't cooperating in 15 minutes, the right answer is to reschedule, not to extend.
3. False reassurance
This is ACOG's most-emphasized concern, and it's a genuinely important one. A non-medical scan tells you nothing about whether the baby is healthy. A keepsake studio is not running anatomy measurements, looking for placenta abnormalities, or screening for growth restriction. They are taking pretty pictures.
If you've been told something is wrong by your OB, a keepsake scan that "looks fine" is not reassurance. The studio is not qualified to give you that reassurance, and they shouldn't try. A good studio will tell you to bring concerns back to your OB. A bad studio will tell you the baby looks great because they want the repeat business.
4. Skipping medical scans
Some moms, especially those without insurance or a regular OB, treat boutique studios as their only ultrasound. That's not what these scans are for. A keepsake studio is a supplement to medical prenatal care, not a replacement for it.
How to vet a studio (the checklist)
Based on the four authorities cited above and the four concerns the FDA actually flags, here's what to look for in a studio:
| What to ask | Why it matters | Red flag |
|---|---|---|
| Who operates the machine? What is their credential? | FDA: untrained operators are the primary risk | "We're all trained in-house" |
| How long is the scan? | FDA: prolonged exposure increases risk | "We do as long as you want" |
| Do you provide a non-diagnostic disclaimer? | ACOG: false reassurance is a known harm | The studio claims to "check the baby" |
| Will you provide medical findings? | ACOG: keepsake studios shouldn't | "We can tell you if there's a problem" |
| Do you follow ALARA principles? | FDA & AIUM: industry standard | Blank stare from the staff |
A reasonable studio will answer the first four questions clearly and the fifth one with at least a recognition of what ALARA is. That's the floor.
What "Verified" means in our directory: the Verified Studio badge means the operator's credential has been independently checked, the studio's business license is current, and the studio has signed an attestation that they follow ALARA-aligned scan protocols. It's not a medical endorsement — it's a process attestation. We think that's the most useful thing a directory can offer.
When you should not get a keepsake ultrasound
Aligned with the FDA and ACOG positions, here are the cases where the answer is "skip it":
- Before 14 weeks, except for a brief 2D gender scan with no 3D rendering. The cheeks haven't filled in for 3D anyway, and exposure should be minimized.
- More than 2 sessions per pregnancy. The FDA's "prudent use" framework explicitly cautions against repeated exposure.
- As a substitute for medical prenatal care. If you don't have a regular OB or midwife, fix that first; a keepsake scan is not a step toward medical care, it's a separate thing.
- If your OB has flagged a complication. Seek confirmation from your OB or maternal-fetal medicine specialist, not from a keepsake studio.
When keepsake ultrasound is fine
- You have regular medical prenatal care through an OB, midwife, or family physician
- You're booking 1 or 2 sessions total, in the 26 to 32 week sweet spot (or earlier for twins)
- You've chosen a studio with a credentialed operator and a published session-length cap
- You understand that a "the baby looks great" comment from the studio is about photos, not health
That's the framing the FDA, ACOG, and AAFP all converge on, even if their public language is more cautious. None of them are calling for keepsake ultrasound to be banned. All of them are calling for it to be done carefully.
The closing recommendation
Talk to your OB before you book. The FDA's own guidance literally says to "talk to their health care provider to understand the reason for the examination and the potential risks." Your OB knows your specific pregnancy — placenta position, fluid levels, growth measurements, any flagged complications. Ten seconds of "is it okay if I do a 3D scan at 30 weeks?" is the right starting point.
If your OB says go ahead, pick a credentialed studio (ours are listed here, here), book a single session in the right week, and enjoy the photos. The activity is reasonable. The studio quality is what makes it safer or worse.
If you want the short, evergreen version of this answer, our safety page has it. If you want to see how the 3D, 4D, 5D, and HD Live formats compare, our format comparison guide is the place. None of those decisions changes the safety calculus — what changes the safety calculus is the operator and the session length.
