Benefits
- Benefit
-
Door-to-groin time fell by 11.2 minutes
Awaiting review
- Outcome identifiers
-
Unresolved
Not reviewedUnresolved
- Category
-
Improved Organizational Efficiency
Awaiting review
- Status
-
Reported benefit
Awaiting review
- Beneficiary groups
-
People. Organizations.
Awaiting review
- Beneficiaries
-
Unresolved
Not reviewedUnresolved
- Reach
-
Unresolved
Not reviewedUnresolved
- Distribution and access
-
Unresolved
Not reviewedUnresolved
- Duration
-
Unresolved
Not reviewedUnresolved
- Expected?
-
Yes
Awaiting review
- Costs and harms
-
Unresolved
Not reviewedUnresolved
AI system
- System
-
Viz.ai automated large vessel occlusion detection with mobile alerting (Viz LVO)
Awaiting review
- Model
-
This is an explicit unresolved assignment: the sources on record do not settle this question.
Not reviewedUnresolved
- Release
-
Unresolved
Not reviewedUnresolved
- Provider
-
Unresolved
Not reviewedUnresolved
- Role
-
Unresolved
Not reviewedUnresolved
- Configuration
-
Unresolved
Not reviewedUnresolved
- Inputs and outputs
-
Unresolved
Not reviewedUnresolved
- Autonomy
-
Unresolved
Not reviewedUnresolved
- Workflow
-
Stroke imaging was sent automatically to the cloud software, which returned results in under five minutes on average. Clinicians and radiologists received alerts and images on a phone app.
Awaiting review
- Human oversight
-
Unresolved
Not reviewedUnresolved
- Relation to AI
-
The order of activation across the four centers was randomized, and a mixed-effects model compared exposed and unexposed periods. The intervention bundled automated detection with group messaging, so the trial measures the combined package.
Awaiting review
- AI contribution
-
The order of activation across the four centers was randomized, and a mixed-effects model compared exposed and unexposed periods. The intervention bundled automated detection with group messaging, so the trial measures the combined package.
Awaiting review
Measurement
- Studies
-
Randomized. [2]
Fully reviewed: supporting details for Studies
Review date: 29 October 2026.
Sources: [2]
- Study design
-
Randomized. [2]
Fully reviewed: supporting details for Study design
Review date: 29 October 2026.
Sources: [2]
- Measurement
-
Treatment timestamps from stroke registry data; 90-day modified Rankin Scale. [2]
Fully reviewed: supporting details for Measurement
Review date: 29 October 2026.
Sources: [2]
- Setting and sample
-
243 patients with large vessel occlusion treated with thrombectomy at four Houston comprehensive stroke centers. [2]
Fully reviewed: supporting details for Setting and sample
Review date: 29 October 2026.
Sources: [2]
- Measures
-
Door-to-groin time. [2]
Fully reviewed: supporting details for Measures
Review date: 29 October 2026.
Sources: [2]
- Comparison
-
Unexposed periods in the stepped-wedge design. [2]
Fully reviewed: supporting details for Comparison
Review date: 29 October 2026.
Sources: [2]
- Results
-
-11.2 minutes (95% CI -18.22 to -4.2). [2]
Fully reviewed: supporting details for Results
Review date: 29 October 2026.
Sources: [2]
- Additional value from AI
-
11.2 minutes faster door-to-groin. [2]
Fully reviewed: supporting details for Additional value from AI
Review date: 29 October 2026.
Sources: [2]
- Limitations
-
Transfers and in-hospital strokes excluded; no difference in 90-day functional independence; senior author funded by the maker. [2]
Fully reviewed: supporting details for Limitations
Review date: 29 October 2026.
Sources: [2]
Money
- Kind of value
-
The kind of monetary value is unclear.
Not reviewedUnresolved
- Amount
-
The monetary value is not established.
Not reviewedUnresolved
- Currency and prices
-
The currency and price basis are unclear.
Not reviewedUnresolved
- Period and unit
-
The period and unit of the monetary estimate are unclear.
Not reviewedUnresolved
- Realization
-
Whether the monetary value was realized is unclear.
Not reviewedUnresolved
- Recipients and payers
-
The recipients and payers are unclear.
Not reviewedUnresolved
- Gross or net
-
Whether the monetary figure includes costs is unclear.
Not reviewedUnresolved
- Included costs
-
The costs included in the estimate are unclear.
Not reviewedUnresolved
- Comparison
-
The financial comparison is not established.
Not reviewedUnresolved
- Method
-
The method used to calculate monetary value is unclear.
Not reviewedUnresolved
- Return and payback
-
The return on investment or payback period is not established.
Not reviewedUnresolved
People and places
- Participants
-
Developer:
Viz.ai. Operator: UTHealth Houston stroke program at four comprehensive stroke centers in greater Houston.Awaiting review
- Jurisdictions
-
Benefit: Four comprehensive stroke centers in the greater Houston area, Texas,
United States. Developer: United States. Operator: United States.Awaiting review
- Ownership and control
-
Unresolved
Not reviewedUnresolved
- Dependencies
-
Unresolved
Not reviewedUnresolved
- Cross-border connections
-
Unresolved
Not reviewedUnresolved
- Geopolitical implications
-
The geopolitical implications are unclear.
Not reviewedUnresolved
Follow-up
- Conditions for replication
-
Stroke teams act on alerts and coordinate through the shared app. Patients present directly to a thrombectomy-capable center.
Awaiting review
- Replication attempts
-
Unresolved
Not reviewedUnresolved
- Later findings
-
The cited sources do not report later results at these centers.
Awaiting review
- Availability
-
Unresolved
Not reviewedUnresolved
- Institutional decision
-
A relevant institutional decision has not been established.
Not reviewedUnresolved
- Grounds
-
The grounds for an institutional decision are unclear.
Not reviewedUnresolved
- Action and result
-
The result of an institutional decision is not established.
Not reviewedUnresolved
- Success criterion
-
The criterion for a successful institutional decision is unclear.
Not reviewedUnresolved
Evidence
- Source numbers
-
AIBD-0610-source-0001–0003
Awaiting review
- Citations
-
Numbered references below.
Awaiting review
- Language
-
Unresolved
Not reviewedUnresolved
- Source relationships
-
Independent, Developer
Awaiting review
- Original evidence
-
Unresolved
Not reviewedUnresolved
- Access and versions
-
Unresolved
Not reviewedUnresolved
- Supported findings
-
Unresolved
Not reviewedUnresolved
- Evidence links
-
Unresolved
Not reviewedUnresolved
- Evidence strength
-
Independently studied. Sources: one independent peer-reviewed study and the makers' peer-reviewed study. The cited evidence includes no finding by a regulator or court. [1] [2]
- Missing evidence
-
Unresolved
Not reviewedUnresolved
Grades
- Assessed benefits
-
People. Organizations.
Awaiting review
- Depth
-
People: 2. Organizations: 1.
Awaiting review
- Reasons
-
People: Patients with large vessel occlusion reached thrombectomy 11.2 minutes sooner after activation; functional outcomes did not differ. Organizations: Stroke teams cut door-to-groin and CT-to-treatment intervals across four centers.
Awaiting review
- Observed or intended
-
Unresolved
Not reviewedUnresolved
- Rubric
-
Unresolved
Not reviewedUnresolved
- Assessor and date
-
Unresolved
Not reviewedUnresolved
- Alternative assessments
-
Unresolved
Not reviewedUnresolved
- Fill
-
Independently studied
Awaiting review
Entry details
- Kind
-
The case describes an evaluation or a study. Cluster randomized stepped-wedge clinical trial. [1]
Fully reviewed: supporting details for Kind
Review date: 29 October 2026.
Sources: [1]
- Related entries
-
No incident in the AI Incident Database snapshot of 26 October 2026 concerns the same kind of system harming the same kind of stakeholder.
Partly reviewedUnresolved: supporting details for Related entries
Compared with the incidents in the AI Incident Database snapshot of 26 October 2026.
- Field
-
Healthcare.
Awaiting review
- Purpose
-
Viz LVO is built to detect large vessel occlusion on CT angiography and alert the stroke team quickly so that thrombectomy starts sooner. The shorter treatment times are that purpose.
Awaiting review
- Dates
-
Observed: 27 February 2022. Updated: 29 October 2026.
Awaiting review
- Stage
-
The system was in routine use. The software was switched on for all suspected-stroke imaging at each center once its step began. [1]
Fully reviewed: supporting details for Stage
Review date: 29 October 2026.
Sources: [1]
- Version
-
SHA-256: 8ae692acd89b…
Awaiting review: supporting details for Version
SHA-256 of the public case, its assessments, and its displayed answers and notes, excluding its own identifier and the derived coverage summary.
References
- Other identifiers
-
Unresolved
Not reviewedUnresolved
- Category mappings
-
Unresolved
Not reviewedUnresolved
- Citable summary
-
Unresolved
Not reviewedUnresolved
- Revisions
-
1 revision. Latest: 29 October 2026.
Awaiting review
Sources
-
Peer-reviewed study Independent author
Ong AQC, Ang CS, Bojic I, et al. Artificial intelligence in cardiovascular care: a systematic review and meta-analysis of randomised controlled trials. eClinicalMedicine 2026. doi:10.1016/j.eclinm.2026.104123. Independent review by authors at Imperial College London, Oxford and other universities; table entry for the Houston trial.
AI-enabled CT angiogram paired with mobile application Door-to-groin time Significant reduction -11.20 min (-18.22 to -4.2)
-
Peer-reviewed study Developer
Martinez-Gutierrez JC, Kim Y, Salazar-Marioni S, et al. Automated Large Vessel Occlusion Detection Software and Thrombectomy Treatment Times: A Cluster Randomized Clinical Trial. JAMA Neurology 2023;80(11):1182-1190. doi:10.1001/jamaneurol.2023.3206. The senior author reported grants from Viz.ai during the study.
In mixed-effects linear regression, implementation of the AI algorithm was associated with a reduction in DTG time by 11.2 minutes (95% CI, -18.22 to -4.2).
Dr Sheth reported grants from Viz.AI and the National Institutes of Health during the conduct of the study