StrokeViewer Perfusion

K231570

NICo-Lab B.V. · cleared 2023-12-14 · product code LLZ · Radiology

Premarket evidence — what FDA accepted

Device typesamd
source quote (p.3)
“StrokeViewer Perfusion is an image processing software package intended to provide quantitative perfusion information in brain tissue for suspected ischemic stroke patients.”
AlgorithmThe output includes parametric maps related to tissue blood flow (perfusion) and tissue blood volume. StrokeViewer Perfusion image analysis includes calculation of the following perfusion related parameters: Cerebral Blood Volume (CBV), Cerebral Blood Flow (CBF), Mean Transit Time (MTT), Residue function time-to-peak (TMax), Arterial Input Function (AIF), Volume calculations of affected tissue based on Tmax and CBF abnormalities
source quote (p.6)
“The output includes parametric maps related to tissue blood flow (perfusion) and tissue blood volume. Results of the analysis are exported as DICOM series and DICOM reports and can be sent to a preconfigured destination and can be reviewed on a compatible DICOM viewer. StrokeViewer Perfusion image analysis includes calculation of the following perfusion related parameters: Cerebral Blood Volume (CBV) Cerebral Blood Flow (CBF) Mean Transit Time (MTT) Residue function time-to-peak (TMax) Arterial Input Function (AIF) Volume calculations of affected tissue based on Tmax and CBF abnormalities”
Adaptive (vs locked)FDA source did not state this
PCCPNo
Cybersecurity addressedYes
source quote (p.8)
“"Content of Premarket Submissions for Management of Cybersecurity in Medical Devices-Final Guidance", October 2, 2014”

Validation studies (1)

Bench

sample size not stated

endpoints: Correlations between the output of the StrokeViewer Perfusion device and the ground truth values; device met performance goals and acceptance criteria

standards: ISO 14971:2019, IEC 62366-1:2015+AMD1:2020, IEC 62304:2006/A1:2016, NEMA PS 3.1 - 3.20 2022d, ISO 13485:2016, ISO/IEC 27001:2022, NEN 7510-1:2017+A1:2020, NEN 7510-2:2017

Reported performance (0 observations)

FDA source did not state a quantitative performance metric — non-reporting is itself the signal.

Each value carries its own analysis unit and task — never compare or pool across devices. Source: 510(k) summary PDF.

Predicate network

Postmarket — what happened after clearance

48
recalls in product code, 24mo
295
MAUDE reports in code, 12mo
+683%
vs code's own 3-yr baseline
26
drift signals on this device
  • adverse_event_inflection

    MAUDE adverse-event reports for product code LLZ: 295 in the 12 months ending 2026-06, vs a 37.7/12mo average over the prior 3 windows (+683%). Code-level count — reports are not attributed to this specific device.

    first seen 2026-07-08 · openFDA /device/event.json count=date_received product_code=LLZ

  • recall_reason_pattern

    Software/algorithm-related recall in product code LLZ (GE Medical Systems SCS, initiated 2026-05-08): "GE HealthCare has become aware of a context synchronization issue in AW Server 3.2 ext. 6.5. When a user selects a patient or exam in the AW Server Web Client worklist and launches" Recalling firm is another firm in the same product code.

    first seen 2026-07-08 · recall res_event_number:99042

  • recall_reason_pattern

    Software/algorithm-related recall in product code LLZ (PHILIPS MEDICAL SYSTEMS NEDERLAND B.V. Veenpluis 4-6 Best Netherlands, initiated 2026-03-05): "Potential that mis-ordered frames in Vue Motion during dynamic cine runs may cause images frames to display out of sequence." Recalling firm is another firm in the same product code.

    first seen 2026-07-08 · recall res_event_number:98520

  • recall_reason_pattern

    Software/algorithm-related recall in product code LLZ (GE Medical Systems, LLC, initiated 2026-01-30): "There is a potential cybersecurity vulnerability affecting certain versions of Centricity Universal Viewer. User login credentials may be exposed on the local client workstation, w" Recalling firm is another firm in the same product code.

    first seen 2026-07-08 · recall res_event_number:98428

  • recall_reason_pattern

    Software/algorithm-related recall in product code LLZ (Focalyx Technologies, LLC., initiated 2025-12-23): "Software device that is an accessory for image-guided interventional and diagnostic procedures involving prostate has accessories that may not function properly with Windows 10, wh" Recalling firm is another firm in the same product code.

    first seen 2026-07-08 · recall res_event_number:98137

  • recall_reason_pattern

    Software/algorithm-related recall in product code LLZ (DICOM Grid, Inc., initiated 2025-11-18): "Software intended to aid in diagnosing conditions, planning treatments, visualizing anatomical structures has a bug that, if all of following are met: Viewing images in InteleShare" Recalling firm is another firm in the same product code.

    first seen 2026-07-08 · recall res_event_number:97993

  • …and 20 more.

Recall and MAUDE counts are product-code-level (reports aren't reliably attributable to one device); a recall is shown as device-attributed only when the recall record itself lists this clearance number. Signals are descriptive observables with sources — never a judgment that the device is unsafe or drifting. Snapshot 2026-07-08.

Reimbursement — how devices like this got paid

Not yet tracked — no payment pathway indexed for this clearance (the reimbursement corpus is a growing seed set).

Applicable FDA guidance — what the submission is measured against

FDA guidance documents and guiding principles applicable to 510(k) AI/ML devices in the Radiology panel. A curated reference index, not legal or regulatory advice — each item states its own status, and a draft is never binding.

Applicability is derived from the device's FDA advisory panel and pathway — cross-cutting guidances apply to every AI/ML device; panel-specific ones are flagged. Titles, dates, and links verified against fda.gov as of July 2026.

Constat Precedent · public FDA/CMS data · descriptive decision-support, not regulatory or reimbursement advice. Share this page: constat.dev/precedent/device/K231570