Your own anatomy. From your existing CT.

Your body.
A new dimension.

See beneath the surface. Explore how things connect. Get to know the extraordinary body that’s been yours all along.

Explore Body4D
From an existing CTEntirely on your MacFree for everyone
Real anatomy. Rendered in Body4D.

Start with a scan you already have. Only use CT scans taken for proper medical reasons. Never get a CT scan just to use Body4D. CT uses ionizing radiation, which can increase cancer risk. Body4D is for exploration and understanding, not diagnosis or treatment decisions. About CT safety

Meet the body you live in

There’s more to you
than meets the eye.

Turn an existing CT into a body you can explore. Move from the shape of an organ to the structures inside it, and back to the original scan.

A stomach reconstructed in Body4D, with surrounding anatomy shown transparentlyStomach · surface rendering
Your scan, in perspective

See the shape.
Find the connections.

Explore your anatomy as a three-dimensional whole. Isolate a structure, turn it around, and understand where it sits in relation to everything else.

  • Select individual organs and body systems
  • Adjust materials, colour and transparency
  • Keep the surrounding anatomy in view

Every angle. Every layer.

Explore axial, coronal and sagittal CT sections. Move between the 3D model and the original image, with contrast tuned to the organ.

Look with more context.

Measure distances, adjust clipping planes, and reveal a structure within its surroundings. Go from the big picture to a closer inspection.

Keep a view worth sharing.

Save viewpoints, revisit your view history, and export images to help explain what you’re looking at. Manage your studies locally.

Transparent head reconstruction revealing the skull, eyes, brain and nasal anatomy

A familiar face. A deeper view.

Explore the head, skull and underlying structures. Register a local photograph to your head model.

Reconstructed lungs with the rib cage visible around them

Your body, connected.

Explore organs, vessels, muscles and bones within the region covered by your scan.

Why I made Body4D

Understanding your body should belong to you.

A scan can hold so much information about you, yet still leave you struggling to understand what you’re seeing — or to explain what you’re feeling.

I made Body4D to help close that gap. To make anatomy easier to explore, difficult experiences easier to discuss, and our own bodies a little less unfamiliar.

When we understand our bodies better, we have more reason to appreciate them — and treat them with care.

That’s why I’m sharing it for free. Your ability to understand your own body shouldn’t depend on what you can pay.

From the creator of Body4D
Introducing the first Body4D lab Research preview

There’s a world
inside a breath.

The Nasal Lab explores the relationship between your anatomy, airflow and heat transfer — and why a nose that looks open may not feel that way.

Explore the Nasal Lab
Airflow simulation in Body4D
A body of possibilities

Today, a closer look.
Next, a longer view.

Body4D starts with existing CT scans. These ideas are in development, and will be introduced as they’re ready.

  • Your body through time

    Bring historical scans together to explore how your anatomy has changed. MRI support and scan time-lapse are planned.

    In development
  • More questions. More labs.

    Focused spaces to explore function and virtual what-ifs, beginning with the nasal airway.

    Research direction
Made personal. Kept private.

A closer look.
Entirely yours.

Your existing scan. Your own anatomy. A new way to understand the body you live in, with processing that stays on your Mac.

Body4D is an exploration tool, not a medical device for diagnosis or treatment. Scan coverage and quality affect what you can see. Use only medically indicated, existing scans.

Body4D for Mac

Free for everyone. The first public release is on its way.

Apple silicon · macOS 14+No subscription

The installer will be available here at launch.

Start with your existing CT’s DICOM files: one supported axial series. Optional organ-recognition models install once, then process locally. Includes 10 interface languages.

An open conversation

Let’s make this
more human.

Questions, feedback, or a research collaboration? I’d love to hear what a better understanding of your body could mean to you.

Help keep it free.

Body4D is shared freely because understanding your own body should be within everyone’s reach. If you’d like to support its development, a donation option is on the way.

Please don’t include medical records, scan files, or sensitive health information. Your name, email and message are used to respond to your enquiry. Cloudflare Turnstile helps prevent spam.