2D, 3D, 4D, & HD Live: 4 Types of Ultrasound Explained
Pregnancy comes with so many exciting milestones, and seeing your baby on ultrasound is one of the most memorable moments. If you’re wondering what the difference is between 2D, 3D, 4D, and HD Live (iLive) ultrasounds, this guide breaks down each type — what they show, when they’re best, and what to expect at Baby Bliss Ultrasound Houston.
1. What Is a 2D Ultrasound?
2D ultrasound is the traditional black-and-white imaging most people recognize. It shows your baby’s outline, movement, heartbeat, and overall growth.
Best For:
Confirming pregnancy
Seeing baby’s heartbeat
Checking position
Early scans
Gender determination
Watching movement in real time
2D is always included in your session and provides the clearest look at baby’s internal structures.
2. What Is a 3D Ultrasound?
3D ultrasound shows a still, lifelike image of your baby’s features. This is where you begin to see the cute nose, lips, cheeks, and facial expressions.
Best For:
Facial images
Hands, feet & profile views
Bonding and keepsake photos
Best Time:
26–32 weeks when baby has more facial fat and clearer features.
3. What Is a 4D Ultrasound?
4D ultrasound is 3D in motion — it allows you to see your baby moving in real time.
You may see baby:
Yawning
Smiling
Sticking their tongue out
Stretching
Wiggling fingers or toes
Because 4D is a live 'video' of your baby, it is perfect for our Mobile Ultrasound sessions where the whole family can watch the movement on your living room TV!
4. What Is HD Live (iLive) Ultrasound?
HD Live (also known as iLive, 5D, or “realistic imaging”) is the most advanced technology.
It uses special lighting and rendering to show incredibly detailed and lifelike images.
Best For:
Deep facial detail
Realistic skin tones
Seeing baby’s expressions
Capturing stunning video clips
Best Time:
28–32 weeks for the clearest HD Live results.
5. What about 8K?
We also offer 8K image enhancements, which take your HD Live photos and use AI to create a hyper-realistic photograph of what your baby will look like at birth!
Which Ultrasound Should You Choose?
At Baby Bliss Ultrasound Houston, all premium sessions include a combination of:
2D
3D
4D
HD Live
You get the best of every technology in one visit — plus digital galleries, heartbeat recordings, and the option to upgrade to 8K editing.
Quick Comparison Chart
Type Shows Best Time Best For
2D Basic outline Any week Gender, heartbeat, movement
3D Still facial images 26–32 weeks Photos, bonding
4D Baby in motion 24–34 weeks Expressions & movement
HD Realistic detail 28–32 weeks Most lifelike images
Final Thoughts
Every ultrasound type offers something unique and beautiful. Whether you’re coming in early for gender or later for HD Live images, each visit provides a special moment to bond with your growing baby.
Ready to Book Your Ultrasound?
Capture the moment before it’s gone.
Book your private 3D/4D experience at our Houston studio or in your own home.
