Every CT scan already contains a whole three-dimensional body. For more than a century, medicine kept flattening it - printing the human interior onto film, then onto screens, as stacks of gray slices a doctor had to reassemble in their head. Sergio Aguirre looked at that habit and asked a stubborn question: why is the last analog holdout in a digital operating room the picture itself?
Aguirre is the founder and chief executive of EchoPixel, a Silicon Valley company he started in 2012. Its software, True3D, takes the exact same CT, MRI or ultrasound data a hospital already collects and lifts it off the screen - into an interactive hologram a physician can rotate, zoom into, and pull apart with a handheld stylus. The scanner does not change. The scan does not change. Only the seeing does.
That distinction is the whole company, and it is worth sitting with. Most medtech pitches promise a new machine. Aguirre's promise is quieter and, in some ways, harder to argue with: the information is already there. We have just been reading it wrong.
01 / ORIGINSFifteen years of teaching machines to see in three dimensions
Aguirre did not arrive at medicine through a stethoscope. He is an electrical engineer, trained at the Tecnologico de Monterrey in Mexico, where he earned a bachelor's degree in electrical engineering and then a master's in electronics with a focus on image processing and stereoscopic imaging. Stereoscopy - the science of how two eyes, seeing slightly different views, build one sense of depth - became an early and lasting obsession.
Before EchoPixel, he ran a technology company of his own, serving as chief executive of Innouva Technologies de Mexico from 2000 to 2005. By the time he founded EchoPixel he had spent more than 15 years inside visualization systems - the kind of stereoscopic 3D that, for most of its life, belonged to entertainment. Games. Displays. Spectacle.
The leap he is known for is taking that same technology and walking it into a hospital. As he put it: “We're taking virtual reality technology, the kind that's previously been restricted to entertainment, and applying it to medicine.” It is a relocation more than an invention - and relocations, done well, can be their own kind of breakthrough.
02 / THE PRODUCTA hologram you reach into, not a headset you disappear behind
A design decision reveals a lot about a founder, and Aguirre made a telling one. EchoPixel does not lock the surgeon inside a VR headset, sealed off from the room and the patient. Instead the anatomy floats on a display in front of them, viewed through lightweight 3D glasses, and manipulated with a stylus in open space. The doctor stays present - in the room, in the procedure, in the conversation - while gaining the ability to handle a patient's organs as if they were real.
His description of what that unlocks is precise: doctors “can simply see patient-specific anatomy and directly interact with it in a way that would allow them to dissect or pick apart organs and tissue, as if they were working with real body parts.” The clinical term EchoPixel uses is a digital twin - a patient-specific model, built from that patient's own scan, that can be interrogated before a single incision.
Read that quote twice. It sounds obvious - of course a doctor would rather look at a heart than mentally reconstruct one from slices. But obvious things are often the hardest to actually fix, and Aguirre spent the better part of a decade fixing this one.
03 / EVIDENCEWhat changes when the third dimension comes back
The case for EchoPixel is not that it looks impressive - though it does - but that the numbers move in the directions that matter to a clinician. In evaluations of the technology, doctors identified up to 90% more congenital heart defects in newborns while cutting examination time by roughly 40%. Sizing a medical device such as a stent, a task that could take around 40 minutes, dropped to about 2.
Those gains carried EchoPixel from the lab toward the operating suite. The company raised a $5.8 million seed round in 2016, the same year True3D earned FDA clearance to create holographic displays from CT and MRI data. In 2018 it graduated from Fogarty Innovation, a Silicon Valley institution devoted to advancing human health. And in 2019, at the Transcatheter Cardiovascular Therapeutics meeting, EchoPixel introduced what it billed as the first-ever intraoperative software to bring a 3D holographic experience into the operating room in support of structural heart procedures.
04 / THE BETGive the third dimension back to smaller hospitals, too
Aguirre's ambition is not only to impress the flagship academic centers that can afford anything. Part of the pitch is reach: helping smaller hospitals and cardiology programs adopt cutting-edge procedures by handing them real-time, interactive mixed-reality imaging and planning that used to require rare expertise. If a piece of software can compress a specialist's spatial intuition into something a broader set of doctors can use, the benefit does not stay in one zip code.
There is a quiet lesson threaded through the whole EchoPixel story, and it is a useful one for anyone building. Aguirre did not wait for a breakthrough in physics or a new scanner. He noticed an ingredient that was already sitting in every hospital - the full 3D data inside an ordinary scan - and realized it was in the wrong form. The work was not discovery. It was insistence: refusing to accept that flat was good enough.
He stays close to the technology in a way founders often drift away from - described interchangeably across coverage as EchoPixel's chief executive, its founder, and its technologist, a reflection of how hands-on he has remained with the core of the product. The company he built is small by headcount, but the idea underneath it is not: that the last flat image in medicine has an expiration date, and Aguirre intends to be the one who marks it.
The scanner in the corner of the radiology suite has not changed. The gray slices it produces have not changed. What Aguirre changed is the oldest interface in the building - the space between the scan and the doctor's eye - and, so far, the hands reaching into the hologram seem to agree it was worth changing.