About this site

A free, interactive teaching model of cerebral angiography. Turn the C-arm and a 3D head and a simulated angiogram change together.

For education only. Not for diagnosis, treatment decisions or procedure planning. See Limits and disclaimer.

What it is

Cerebral Angio links a rotatable 3D model of the head arteries to a simulated digital subtraction angiogram (DSA). Choose a catheter position, change the projection, and see how the same vessels look from each angle. It also shows the venous phase, the brain structures around the vessels, a stylized ischemic stroke and the visual pathway.

The arteries come from one real MRA scan, not from a drawing. The brain around them comes from standard atlases. Some parts are schematic, and the site says so where it matters.

Who it is for

Medical students and residents who want to build a mental 3D picture of the cerebral vessels and read an angiogram with more confidence: neurology, neurosurgery, radiology and neurointervention trainees, and anyone teaching them. It is not a reference for planning a procedure.

What to try first

1. AngiographyPick Right ICA, choose AP or lateral, press Play and watch the contrast fill. Then switch on Venography. 2. AnatomyUse the focus lenses (motor, language, vision, memory), Brodmann areas and the section plane. 3. Ischemic StrokeClick an artery to occlude it. See the territory, the axial slice and a stylized infarct over time. 4. Visual pathwayChoose the side and the site of a lesion and read the visual field chart.

How to read the angiogram

LAO puts the detector on the patient's left, RAO on the right. Cranial tilts the detector toward the head.
Images are shown as if you stand at the detector and look at the patient, so in an AP view the patient's right is on your left.
The projection is orthographic: there is no cone-beam magnification.
The Real DSA button shows true angiograms from the DIAS dataset next to the simulation. Those patients have vessel narrowing or occlusion, so use them for comparison only.

More about the site

How it was made: the data and the steps behind each view, and how Claude Code was used.
Sources and licenses: every dataset, atlas and library, with its license.
Limits and disclaimer: what is schematic or stylized.
Changelog and roadmap: what changed and what is planned.
Author and Feedback.