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§ Private Profile · Menlo Park, CA, USA
Subtle Medical is a technology company.
Subtle Medical has raised $52.0M across 5 funding rounds.
Key people at Subtle Medical.
Subtle Medical has raised $52.0M in total across 5 funding rounds.
Subtle Medical provides vendor-neutral deep learning software for medical image acquisition. Its AI solutions enhance image quality, enabling faster, safer protocols. As a Software as a Medical Device, these tools integrate into radiology workflows, boosting efficiency and diagnostic clarity.
Founded out of Stanford, Subtle Medical was created by Neuroradiologist Greg Zaharchuk, MD, Ph.D., and deep learning scientist Enhao Gong, Ph.D. Their collaboration revealed deep learning's power to improve medical imaging access and quality, leading to the company's establishment and Stanford StartX program acceptance.
Subtle Medical's products empower physicians with timely diagnoses and high-quality care, benefiting patients. The company envisions every individual accessing safe, efficient medical imaging, enhancing the healthcare ecosystem. It optimizes global radiology practices and promotes environmental sustainability through responsible AI.
Subtle Medical has raised $52.0M in total across 5 funding rounds.
Subtle Medical's investors include Altalurra Ventures, Caixa Capital, Fusion Fund, Next Level Ventures, Scale Asia Ventures, 3E Bioventures Capital, Alumni Ventures, Berkeley SkyDeck Fund, Bessemer Venture Partners, BootstrapLabs, James Hardiman, DCVC (Data Collective).
Subtle Medical is a medical imaging software company that develops vendor-neutral, AI-powered solutions to enhance image quality, reduce scan times, and lower costs in MRI, PET, and CT imaging. It serves hospitals, radiology providers, and imaging networks by addressing key challenges like long wait times, high radiation doses, and aging equipment, enabling up to 80% faster scans, 50% higher throughput, and improved diagnostic confidence.[1][2][3][5] With over $50 million raised, 9 FDA clearances, 30+ patents, and deployments on nearly 1,000 scanners globally, the company has strong growth momentum, including recent partnerships with SimonMed, Rezolut, 626, and Bracco, plus recognitions like CB Insights GenAI 50 and TIME's Top HealthTech Companies of 2025.[2][4][5][6]
Subtle Medical emerged from Stanford University, founded by Greg Zaharchuk, MD, PhD—a neuroradiologist and professor—and Enhao Gong, PhD, a deep learning scientist who studied under Zaharchuk.[4] Their collaboration sparked during Gong's PhD, where they identified deep learning's potential to boost medical imaging quality and access, leading to the company's launch and acceptance into Stanford's elite StartX accelerator program.[4] Early traction built through proprietary AI algorithms, resulting in rapid scaling: over $50M in funding, 70+ employees, and global deployments on close to 1,000 scanners across multiple countries.[4]
Subtle Medical stands out in AI medical imaging through these key strengths:
Subtle Medical rides the AI-driven radiology revolution, capitalizing on generative AI and deep learning to tackle chronic imaging bottlenecks amid rising demand from aging populations and chronic diseases.[2][4][5] Timing is ideal: post-pandemic backlogs, scanner shortages, and sustainability pressures favor software upgrades over costly hardware, with market forces like FDA's AI/ML SaMD approvals accelerating adoption.[5][6][7] By partnering with providers like SimonMed and Rezolut, it influences the ecosystem through higher throughput (more patients served daily), deferred capex, and greener operations—reducing carbon footprints while enabling precision diagnostics at scale.[2][5][6]
Subtle Medical's multi-modal expansion (MR, PET, CT) and 2025 growth—fueled by FDA wins, OEM ties, and enterprise deals—position it to dominate AI imaging, potentially doubling scanner deployments amid RSNA showcases.[2][5] Trends like GenAI integration, low-dose protocols, and pharma collaborations will shape its path, evolving its influence from workflow optimizer to full radiology platform leader. As AI transforms healthcare efficiency, Subtle exemplifies how deep learning from Stanford roots delivers faster, safer imaging worldwide—poised to serve even more patients better.
Subtle Medical has raised $52.0M across 5 funding rounds. Most recently, it raised $10.0M Series B in May 2024.
Key people at Subtle Medical.
