Radiology AI Directory

FDA-cleared profile

KOALA

IB Lab GmbH

Authorized purpose: The Knee OsteoArthritis Labeling Assistant (KOALA) software provides metric measurements of the joint space width and indicators for presence or absence of radiographic features of osteoarthritis (OA) on PA/AP knee X-ray images.

Quantification and segmentation
Evidence status: each field states its source quality, applicability, and review date. Research pending, information not established, and vendor documentation pending remain distinct outcomes.

Product overview

Start with the essentials

Authorized purpose: The Knee OsteoArthritis Labeling Assistant (KOALA) software provides metric measurements of the joint space width and indicators for presence or absence of radiographic features of osteoarthritis (OA) on PA/AP knee X-ray images.

Overview status: Source-reviewed overview

Clinical takeaway

Clinical role: The Knee OsteoArthritis Labeling Assistant (KOALA) software provides metric measurements of the joint space width and indicators for presence or absence of radiographic features of osteoarthritis (OA) on PA/AP knee X-ray images.

Evidence takeaway

Evidence from the reviewed source record: Software verification and validation testing was completed for the subject device. The software functioned as intended and all results observed were as expected. Standalone clinical performance validation was performed on a dataset containing 6597 radiographs, representing 1149 individuals.

Clinical details

What this tool is for

Start with the authorized purpose, then verify how it fits your service line and reading workflow.

Exact purpose
The Knee OsteoArthritis Labeling Assistant (KOALA) software provides metric measurements of the joint space width and indicators for presence or absence of radiographic features of osteoarthritis (OA) on PA/AP knee X-ray images.
  • FDA source
  • Exact FDA submission
  • Checked 2026-09-19

Clinical-use display mirrors the exact FDA-supported purpose reconciled from the decision-summary packet.

Intended users
Trained professionals including radiologists, orthopedics, physicians, and medical technicians
  • FDA source
  • Exact FDA submission
  • Checked 2026-09-19

Exact FDA decision-summary packet reviewed on 2026-09-19; existing wording is supported without expansion.

Care setting and population
Adult
  • Public source
  • Exact FDA submission
  • Checked 2026-09-01

Patient-population text reported in the exact-submission ACR model card; institutional setting may still require vendor confirmation.

Workflow role
Measurement or quantification
  • Public source
  • Exact FDA submission
  • Checked 2026-08-31

Conservative normalization of explicit wording in an exact-submission source.

Required input
DICOM compliant images collected in other devices in either digitally computed (CR) or directly digital (DX) formats; standing, fixed-flexion radiographs of the knee.
  • FDA source
  • Exact FDA submission
  • Checked 2026-09-19

The exact summary specifies DICOM, CR/DX image formats, and standing fixed-flexion knee radiographs rather than generic MSK radiography.

Output and human action
KOALA outputs a report including: minimum joint space width measurements (medial and lateral); presence or absence of sclerosis, joint space narrowing, and osteophytes based on OARSI criteria; and presence or absence of radiographic knee OA based on Kellgren & Lawrence grading. Results are summarized in a KOALA report viewable on any FDA-approved DICOM viewer workstation.
  • FDA source
  • Exact FDA submission
  • Checked 2026-09-19

Exact FDA decision-summary packet reviewed on 2026-09-19; existing wording is supported without expansion.

Limitations
It should not be used in-lieu of full patient evaluation or solely relied upon to make or confirm a diagnosis.
  • FDA source
  • Exact FDA submission
  • Checked 2026-09-19

This is the exact packet limitation; the ACR scanner-manufacturer label is not an FDA limitation statement.

Regulatory identity

FDA record and catalog context

The FDA listing establishes the regulatory identity. It does not by itself establish local workflow fit, pricing, security, or performance in your environment.

FDA submission
K192109
  • FDA source
  • Exact FDA submission
  • Checked 2026-08-31
Modality
X-ray/Radiography
  • FDA source
  • Exact FDA submission
  • Checked 2026-09-19

Exact FDA decision-summary packet reviewed on 2026-09-19; existing wording is supported without expansion.

Anatomy
MSK
  • FDA source
  • Exact FDA submission
  • Checked 2026-09-19

The exact summary identifies the anatomical area as joint (knee); it does not use the dossier's broad MSK label. Controlled directory display reconciled from exact FDA wording: Joint (knee). -> MSK.

Clearance type
510(k)
  • FDA source
  • Exact FDA submission
  • Checked 2026-08-31
Decision date
2019-11-05
  • FDA source
  • Exact FDA submission
  • Checked 2026-08-31
FDA status
FDA-cleared
  • FDA source
  • Exact FDA submission
  • Checked 2026-08-31

Implementation

Questions for IT, informatics, and operations

Use these fields to structure a vendor demo, security review, and implementation estimate.

Integration
The exact-submission ACR model card explicitly references DICOM in the described input, output, or workflow; exact interfaces, versions, and local compatibility require confirmation.
  • Public source
  • Exact FDA submission
  • Checked 2026-09-01

Interoperability terms explicitly reported in the exact-submission ACR model card; interface versions and local compatibility still require confirmation.

Deployment and data flow
On-premise
  • Public source
  • Exact FDA submission
  • Checked 2026-08-13

Deployment category preserved from the prior exact-submission review; hosting region, data flow, and current commercial configuration still require vendor confirmation.

Security and privacy
Vendor documentation pending
  • Vendor confirmation
  • Exact FDA submission
  • Checked 2026-09-08

Exact-release security controls, data retention, hosting boundaries, and scoped assurance documentation require vendor confirmation.

Training and support
Vendor documentation pending
  • Vendor confirmation
  • Exact FDA submission
  • Checked 2026-09-08

Current training prerequisites, competency checks, and support commitments for the exact configuration require vendor confirmation.

Monitoring and change control
Vendor documentation pending
  • Vendor confirmation
  • Exact FDA submission
  • Checked 2026-09-08

Current drift, quality, uptime, alert, escalation, and incident-response commitments for the exact configuration require vendor confirmation.

Input or output interoperability

DICOM is explicitly referenced in the described input, output, or workflow.

exact submission · checked 2026-09-01

The model card does not establish every supported DICOM object, transfer method, or local interface.

Source

Result destination

workstation is explicitly referenced as a result destination.

exact submission · checked 2026-09-01

Confirm supported products, versions, routing behavior, and display requirements during local evaluation.

Source

Supported acquisition environment

Scanner manufacturers: All

exact submission · checked 2026-09-01

Confirm currently supported software versions, protocols, and site-specific acquisition configurations.

Source

ACR exact-submission catalog context

ACR AI Central provides an exact-submission model card for KOALA; FDA labeling remains controlling for clinical use, limitations, and performance.

exact submission · checked 2026-09-08
Source

Evidence

Performance evidence

Metrics are shown only when they are tied to a source, endpoint, population, and tested product version. Candidate literature without exact product and version linkage is not shown as product evidence.

Evidence summary
Software verification and validation testing was completed for the subject device. The software functioned as intended and all results observed were as expected. Standalone clinical performance validation was performed on a dataset containing 6597 radiographs, representing 1149 individuals.
  • FDA source
  • Exact FDA submission
  • Checked 2026-09-19

The exact packet supports verification/validation and the 6597-radiograph, 1149-individual dataset; it does not support the dossier's single aggregated sensitivity/specificity values.

Reported sensitivity
84.50%
  • Public source
  • Exact FDA submission
  • Checked 2026-09-01

Model sensitivity reported by ACR AI Central. Review endpoint, threshold, study population, and tested version before comparison.

Reported specificity
80.50%
  • Public source
  • Exact FDA submission
  • Checked 2026-09-01

Model specificity reported by ACR AI Central. Review endpoint, threshold, study population, and tested version before comparison.

No contextualized exact-version metric has completed evidence review. Regulatory-document values, when available, are shown above with their limitations.

KOALA regulatory performance study summary

  • DesignStand-Alone Performance
  • PopulationAdult
  • Scopeexact submission
  • Tested versionExact product version not reported; regulatory study summarized for FDA submission K192109
  • Samplen=1149
  • IndependenceIndependence not established

K192109

ACR AI Central summarizes the regulatory study; consult the exact FDA materials before comparative use.

Source

Costs and setup

Budget and ongoing governance

These are common procurement questions; unknown values remain visible until a source supports them.

Pricing and total cost
Vendor documentation pending
  • Vendor confirmation
  • Exact FDA submission
  • Checked 2026-09-08

No public price or quote for the exact K192109 configuration was established in this review.

Reimbursement and coding
Not established in reviewed sources
  • Reviewed sources checked
  • Exact FDA submission
  • Checked 2026-09-08

No exact-product payer policy, coding instruction, or payment determination was established; eligibility must be evaluated by payer, site of service, and use case.

Safety and lifecycle

Postmarket record

Recall and adverse-event records are shown only after product matching. Adverse-event reports do not establish incidence or causality.

Postmarket safety review
The exact-identifier FDA recall query returned no native recall record for K192109. This limited result does not establish absence of recalls or other safety information and does not cover later versions, family records, MAUDE reports, corrections, or field notices.
  • Public source
  • Exact FDA submission
  • Checked 2026-09-08

Buyer worksheet

Open questions to take to the vendor

Open evaluation checklist

Research record

What has been checked

This audit distinguishes completed source review from fields that have not yet been researched.

Exact FDA record reviewedStatus
2026-09-20Last searched
28Fields reviewed
10Source classes checked
20Screened PubMed leads
10Screened trial leads
0Unreviewed FDA recall leads

The refreshed discovery snapshot contains 20 PubMed and 10 ClinicalTrials.gov candidate records. Discovery metadata alone does not establish exact tested-product, version, population, and endpoint applicability, so all candidates remain quarantined and none was promoted. The current discovery snapshot contains 20 PubMed and 10 ClinicalTrials.gov candidate records; its dated, count-matched human screening remains current. Unlinked candidates remain quarantined. Native FDA recall identifiers produced 0 postmarket candidate records; 0 have been reviewed (0 published, 0 rejected) and 0 remain unreviewed.

Candidate leads were screened against the exact product and tested version. Unlinked records remain quarantined.

Source classes: fda ai list, fda decision summary, acr ai central product, fda device recall, literature index, trial registry, fda decision summary packet, pubmed, clinical trials, openfda device recall

Sources & history

How this profile was documented

Open the ledger for source dates, scope, and research-record updates.

View source ledger and history

Source ledger

  1. FDA K192109: KOALA

    U.S. Food and Drug Administration - Published 2019-11-05 - Accessed 2026-09-19

    Scope: identity, clinicalUse, modality, anatomy, workflow, evidence, implementation, purpose, intendedUsers, output, input, limitations, evidenceSummary

  2. Artificial Intelligence-Enabled Medical Devices

    U.S. Food and Drug Administration - Accessed 2026-08-31

    Scope: regulatoryIdentity, modalityContext

  3. KOALA model card (K192109)

    American College of Radiology - Published 2026-08-17 - Accessed 2026-09-01

    Scope: intendedUsers, careSetting, output, limitations, reportedSensitivity, reportedSpecificity, evidenceSummary, integration, anatomy, evidenceStudies, implementationCapabilities

  4. PubMed biomedical literature index

    U.S. National Library of Medicine - Accessed 2026-09-01

    Scope: evidenceDiscovery

  5. ClinicalTrials.gov study registry

    U.S. National Library of Medicine - Accessed 2026-09-01

    Scope: evidenceDiscovery, studyStatus

  6. openFDA Device Recall API

    U.S. Food and Drug Administration - Accessed 2026-09-02

    Scope: recallDiscovery, nativeSubmissionMatching

  7. openFDA exact recall query for K192109

    U.S. Food and Drug Administration - Accessed 2026-09-08

    Scope: postmarketSafety

Research history

  1. K192109 FDA decision

    Regulatory record

    510(k)

  2. Source-review record updated

    Research record

    fda record reviewed

  3. Reader overview source-reviewed

    Editorial review

    Source-reviewed editorial overlay

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