An accurate brain ultrasound that sees inside the skull — in an ambulance, a clinic, or at the bedside. No CT. No MRI. No hospital required. Because in a stroke, every second of delay has consequences for the rest of a person's life.
Offner Technologies is developing an accurate brain ultrasound device that detects stroke — anywhere, immediately, without radiation or waiting. The device uses low-frequency acoustic waves that penetrate the skull with sub-millimetre precision, providing full brain and head imaging with multiple cross-sections — something conventional ultrasound cannot do. It is designed to work in an ambulance, an emergency room, a rural clinic, or at the patient's bedside. No CT. No MRI. No hospital required. In a brain stroke, two million neurons die every minute — and current diagnosis requires reaching a hospital with a scanner, a process that can take hours. This device is designed to close that critical gap.
Stroke is the second leading cause of death worldwide and the leading cause of long-term disability. When a stroke occurs, the brain loses approximately 1.9 million neurons, 14 billion synapses, and 12 km of nerve fibers every minute. The outcome — whether a person walks again, speaks again, lives independently — depends on how fast the stroke is diagnosed and treated.
The medical community calls it "Time is Brain" — every minute of delay in treatment results in measurable, irreversible brain damage. Yet the reality for millions of stroke patients is a painful paradox: the only way to confirm what is happening inside the brain is to reach a hospital with advanced imaging equipment.
CT and MRI are the only tools that can see inside the brain. Both require a hospital, a specialized suite, trained technicians, and time. For rural areas, the nearest scanner may be hours away.
Treatment for ischemic stroke (tPA) must be administered within 3–4.5 hours. For thrombectomy, the window extends but every minute counts. Most patients arrive at the hospital too late for the most effective treatments.
Is it ischemic (blocked blood vessel) or hemorrhagic (bleeding)? The treatment is opposite — tPA saves lives in ischemic stroke but can kill in hemorrhagic. Without imaging, paramedics and emergency physicians are working blind.
Conventional ultrasound cannot image the adult brain. The skull blocks high-frequency waves. To get higher resolution, conventional systems need higher frequency — but higher frequency cannot penetrate bone. It is a fundamental tradeoff that has kept ultrasound out of neurology for decades.
Offner Technologies has decoupled frequency from precision. By working on the acoustic wave front using standing wave technology, the device achieves sub-millimetre precision at frequencies low enough to penetrate the skull and brain — approximately 200 KHz. The result: full brain and head imaging with multiple cross-sections.
The physics is known: low-frequency acoustic waves can penetrate the skull. The problem was that low frequency meant low resolution — useless for diagnosis. The NL-SWI platform solves this by extracting precision from the wave front itself, not from the frequency. The same underlying physics has been independently demonstrated at NASA Langley Research Center (Haldren et al., Rev. Sci. Instrum. 89, 054902, 2018).
The technology earned 26 patents in its older generation — which demonstrates the strength of the underlying physics. Offner has developed a new approach using a fully computer-controlled system developed with the assistance of artificial intelligence.
Paramedics can image the brain on the way to the hospital — arriving with a diagnosis rather than starting from zero. Treatment begins sooner. Lives are saved.
The device can differentiate between blocked vessels and bleeding — the single most critical question in stroke treatment. The wrong answer can be fatal.
See whether treatment is working — in real time. Monitor the success of first-aid measures. Track changes in the brain continuously, without radiation limits.
Rural clinics, military field hospitals, developing countries — anywhere a stroke occurs and there is no CT or MRI. The device brings brain imaging to the patient, not the patient to the imaging.
No radiation, no contrast agents, no magnetic fields. Safe for repeated use, for children, for pregnant women, for continuous monitoring of critical patients.
Not a limited acoustic window — but full brain and head imaging with multiple cross-sections. Something conventional ultrasound simply cannot achieve through the adult skull.
| Feature | CT | MRI | Conv. Ultrasound | NL-SWI |
|---|---|---|---|---|
| Sees Through Adult Skull | Yes | Yes | No | Yes |
| Ionizing Radiation | Yes | None | None | None |
| Requires Hospital | Yes | Yes | No — but can't see brain | No |
| Ischemic vs. Hemorrhagic | Yes | Yes | Cannot image brain | Yes |
| Continuous Monitoring | Radiation limits | Impractical | Cannot image brain | Yes |
| Time to First Image | Minutes (at hospital) | 30+ minutes | Seconds | Seconds |
| Use in Ambulance | No | No | Yes — but can't see brain | Yes |
Every year, approximately 15 million people worldwide suffer a stroke. Of those, 5 million die and another 5 million are left permanently disabled. In most cases, the difference between recovery and disability comes down to one factor: how fast the stroke was diagnosed.
The prehospital gap — emergency medical systems worldwide recognize that the inability to image the brain outside a hospital is the single greatest bottleneck in stroke care. Ambulance services, military medicine, and rural healthcare providers all face the same problem.
The treatment decision — stroke treatment has advanced dramatically, but every treatment depends on accurate diagnosis. Clot-busting drugs save lives in ischemic stroke but can kill in hemorrhagic stroke. Without imaging, the treatment that could save a life cannot be given.
The access gap — in developing countries, entire regions lack CT or MRI scanners. Even in developed countries, rural areas face hours of transport time. A device that brings brain imaging to the patient — not the patient to the imaging — changes the equation entirely.
Offner Technologies is looking for a strategic partner in neurology, emergency medicine, or medical device manufacturing — who can take a validated measurement platform and turn it into a product that saves lives and prevents disability in millions of stroke patients every year.
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