Arachnoid cysts straddle incidentaloma and surgical disease. AURORA-ARACH explores membrane origin, intra-cyst fluid mechanics and a forge of fenestration strategies.
A non-functional preview of the AURORA-ARACH surface. Composable panels, logged overrides, explainable end-to-end. Pilot sites tune this to their own workflow.
ARACH-ORIGIN Membrane Origin68%ARACH-PHYSICS Cyst Physics82%ARACH-FORGE Surgical Forge55%AURORA-ARACH replaces gut-feel with a transparent decision substrate for arachnoid cysts. Three subsystems span membrane origin, intra-cyst physics and a comparative fenestration forge.
Arachnoid cysts sit on a line between incidentaloma and surgical disease. Most never need treatment; some do, and the cost of operating wrong — or operating late — is real. AURORA-ARACH replaces gut-feel with a transparent decision substrate.
ARACH-PHYSICS is the engine: intra-cyst pressure, slit-flow and mass-effect modelling that turns a single MRI volume into a band, not a verdict. ARACH-ORIGIN provides the developmental context. ARACH-FORGE compares endoscopic vs open fenestration on a patient-specific basis.
Most pilot sites adopt ARACH-PHYSICS first for triage, then add ARACH-FORGE when a surgical question becomes concrete.
We are not building a product around Arachnoid Cysts. We are seeding an infrastructure — so that any hospital with the will to use it can.
AURORA-ARACH replaces gut-feel with a transparent decision tree. The physics-band scores mass effect; the patient context decides operate-or-watch. The tree is the same; the bands move case-by-case.
Every AURORA-ARACH subsystem can be adopted alone or as part of the bundle. Each ships with its own model cards, eval results and a one-command install.
Arachnoid splitting biology and developmental staging.
Arachnoid splitting biology and developmental staging.
Intra-cyst pressure, slit-flow and mass-effect simulator.
Intra-cyst pressure, slit-flow and mass-effect simulator. The triage engine for the module.
Comparative endoscopic vs. open fenestration planning.
Comparative endoscopic vs open fenestration planning, with patient-specific risk envelopes.
Inputs the module reads from your existing systems, outputs it returns to them, the protocols it speaks, and the lifecycle of one case as it moves through AURORA-ARACH.
Arachnoid splitting biology and developmental staging.
Intra-cyst pressure, slit-flow and mass-effect simulator. The triage engine for the module.
Comparative endoscopic vs open fenestration planning, with patient-specific risk envelopes.
3 drafts by the module team and pilot collaborators. Each documents one slice of the substrate — methods, evaluation protocol, lessons. Slot PDFs in as they're ready; the entries point to placeholders until then.
These are the endpoints AURORA-ARACH is built to measure across pilot deployments. The targets below are pilot goals, not retrospective results.
On paediatric incidentaloma cohorts (target).
Among triaged surgical candidates.
ARACH-PHYSICS on open registry data.
Surveillance cadence tuned to physics-band.
Every override logged with reason.
Family-rated clarity of triage outcome.
pip install to a hospital deploy in one afternoon.Available to pilot partners today on private registries. At public alpha (Q4 2026) the same images, weights and signatures ship under MIT on public registries. For the full per-product download grid, see the unified download page.
pip install aurora-arach
aurora doctor arach # → AURORA-ARACH ✓ python ✓ physics ✓ forge # → three subsystems loaded
from aurora.arach import triage out = triage(case_id="bench/arach/case-0011") print(out.physics_band) # → "low mass-effect · σ 0.07"
AURORA-ARACH is designed to run on hardware that already exists inside hospital networks. CPU-only inference is supported for the lighter subsystems; the heavier ones benefit from a recent GPU but do not require one. A single modern workstation handles routine cases under the latency target.
Federated deploys do not require open inbound ports. The runtime opens an outbound mTLS connection to the federation control plane; model updates are signed, audited and pulled. Patient data never traverses the federation. Consent metadata is a first-class object — subsystems with an explicit consent dependency refuse to run on records that lack the appropriate cohort policy.
Most pilot sites land on AURORA-ARACH with an existing system in place. The recommended path is: install alongside, compare outputs on a held-out cohort for one quarter, then move read-only surfaces to AURORA, and decide on the rest. Reversibility is a design goal — nothing in the install creates lock-in.
For the full per-product, per-platform download buttons (macOS / Windows / Linux installers + pip / docker / helm / rust commands), see the unified download page. Each subsystem of AURORA-ARACH is independently downloadable there.
AURORA is in private pilot today and opens to the world at public alpha in Q4 2026 under MIT. If you carry the weight of these diseases — as a clinician, scientist, builder, patient or advocate — there is a seat at the table.