Intelligence calibrated to the patients it actually serves.

The same measurement, opposite meaning.

Directional grain falls away in the lung field when architecture is lost — 1.41 below baseline. In the mediastinum, where filling occurs around the dense central structures, the same measurement rises — 1.00 above. One rule cannot describe both, so GeoRadX does not use one.

Every region carries its own baseline, measured from healthy tissue. Rows are normalised per patient: row 0.00 is that patient's lung apex and row 1.00 their diaphragm, so the same row means the same anatomy on a tall chest and a short one.

Two regions report nothing.

At the chest wall the signature inverts: the texture measurement runs the opposite way, so a rule built in the lung field would give the wrong answer there. In the peripheral lung too few findings were recorded to derive a signature that held up under review. Both stay empty in version 1.

A film from March and a film from today are the same object.

Because both are topology, the engine compares them cell by cell instead of asking a clinician to hold two images side by side and remember the difference. What changed, where, and by how much.