Abstract:
This presentation introduces "Spectra," an open-source, portable biomedical imaging device developed by Mind’s Eye Biomedical to democratize access to diagnostic tools. Utilizing Electrical Impedance Tomography (EIT), the device reconstructs internal images by sending micro-alternating currents through the body, offering a non-ionizing, low-cost alternative to traditional modalities like CT and MRI. The project aims to shift medical imaging from the "ivory tower" of million-dollar, room-sized installations to wearable, accessible hardware. Having successfully fulfilled its crowdfunding phase, Spectra is currently being utilized in diverse research applications ranging from intracranial pressure monitoring at the Mayo Clinic to non-radiative infant lung imaging and gestural control. The initiative seeks philanthropic investment to bypass traditional venture capital constraints and accelerate the integration of machine learning with accessible physiological data.
Spectra: Democratizing Medical Imaging via Open-Source EIT Hardware
0:00 - The PC Revolution Model: The speaker draws a parallel between the transition from room-sized mainframes to personal computers and the current state of medical imaging. The goal is to move beyond million-dollar, stationary systems (MRI/CT) toward portable, wearable devices to accelerate healthcare innovation.
1:15 - Barriers in Current Modalities: Standard imaging tools are criticized for high costs and safety risks. CT scanners use ionizing radiation; MRIs require expensive helium cooling and maintenance; even medical-grade ultrasounds remain bedside units costing upwards of $100,000.
2:21 - Technical Specifications of Spectra: Spectra is a 2-inch squared device utilizing Electrical Impedance Tomography (EIT). It functions by passing tiny alternating currents through a conductive body at various angles to reconstruct spatial images, similar to the back-projection algorithms used in CT scans.
3:07 - Safety and Human Application: The currents used are within IEC (International Electrotechnical Commission) safety guidelines for human use. The device is Bluetooth-enabled and capable of thoracic mounting for real-time lung function reconstruction, comparable to CT results but without radiation.
3:54 - Broad Diagnostic Utility: Beyond pulmonary imaging, the device can monitor any conductive changes, including bladder volume, stomach activity, long-term adipose/muscle shifts, and short-term muscle contractions for gestural control.
4:36 - Evolution of Resolution: Comparing current Spectra output to the first low-resolution MRI images from 1977, the speaker argues that while EIT resolution is currently lower than high-field MRI, the path to improvement lies in mass manufacturing and accessible hardware iteration.
5:30 - Leadership and Proven Track Record: Founder Jean Rintoul highlights a 15-year background in biosensors, with previous roles at Basis (acquired by Intel), Emotiv (consumer EEG), and startups backed by SOSV, establishing technical and commercial credibility.
6:32 - Impact on Preventative Medicine: Democratized imaging encourages physiological curiosity and preventative health. The integration of machine learning with the data streams from Spectra is identified as a primary frontier for future diagnostic breakthroughs.
8:09 - Future Roadmap and Funding Philosophy: The project rejects the standard VC model focused solely on shareholder returns. The focus is on value growth and the "Future of Humanity" through democratic access. The speaker calls for philanthropic investors to help scale the community and combine EIT with complementary technologies.