Sonavex is a Baltimore medical device company, spun out of Johns Hopkins University in 2013, that builds automated 3D ultrasound products for dialysis vascular access care. Its portfolio pairs a bioresorbable implantable ultrasound marker with deep-learning-enabled imaging hardware so clinicians without ultrasound training can quantify blood flow and vessel anatomy. The company has raised roughly $34 million in equity and federal grant funding, including a $3 million NIH grant, and holds FDA 510(k) clearances across its product line.