Heart
Real CT-derived four-chamber anatomy inside an MRI-segmented body, driven by a physiological activation model and rendered live in the browser with a synchronized, model-derived 12-lead ECG.
Key metrics
Architecture
A 162k-point tetrahedral CT mesh is registered into the BodyParts3D whole body by similarity ICP (2.0 mm RMS). Activation runs as an anisotropic graph-eikonal with a His–Purkinje layer; an equivalent-double-layer forward model produces the 12-lead ECG; a server-side Lambda localizes damage from the ECG alone.
Case study
Heart
A causal model of the human heart you can hold in your hand: real anatomy, real physiology and a real 12-lead ECG, running live in the browser at heart.macleodlabs.com.
The model
- Anatomy. A 162k-point four-chamber CT mesh with rule-based fibres, registered into an MRI-segmented whole body (2.0 mm RMS), so the heart's position is measured, not staged.
- Activation. An anisotropic graph-eikonal model with a conduction system: SA node, atria, AV delay, His–Purkinje fast layer, then myocardium.
- Repolarization. APD90 fields with restitution coupling and apicobasal and transmural gradients, giving concordant T waves.
- 12-lead ECG. An equivalent-double-layer forward model: 10 physical electrodes, 12 derived leads, one global gain calibrated on normal sinus rhythm.
- Hemodynamics and motion. A four-chamber 0D circulation drives the PV loop and the heart's motion.
Damage from the ECG alone
Choose a damage scenario, or read a photographed ECG. A server-side inverse model matches the 12-lead trace against a library of simulated lesions and highlights where the damage most likely is.
Not a medical device and not medical advice. Simulation outputs are illustrative, research-grade estimates.
Tech stack
Gallery
