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Kosmos PLAX EF Pivotal Study

NCT07771231 · Status: ACTIVE_NOT_RECRUITING · Type: OBSERVATIONAL · Enrollment: 416

Last updated 2026-08-18

No results posted yet for this study

Summary

The purpose of this study is to validate the efficacy of Kosmos PLAX EF, an AI-assisted workflow that uses a cardiac ultrasound clip in Parasternal Long Axis (PLAX) cardiac view to calculate Left Ventricular Ejection Fraction (LVEF) using the Teichholz method. This study will compare the algorithm-generated measurements to measurements performed by hand by expert echocardiographers. The primary objectives of the study are to demonstrate that the algorithm measurements are statistically interchangeable with measurements from a reference standard derived from human expert readers. The primary hypotheses are that the algorithm measurements of left ventricular internal dimensions at 1) end-diastole (LVIDd) and 2) end-systole (LVIDs), respectively, will be statistically non-inferior to the reference standard. The secondary objective is to demonstrate that the algorithm-calculated LVEF is statistically interchangeable with the LVEF calculated by human readers. The secondary hypothesis is that the LVEF calculated from algorithm measurements will be statistically non-inferior to the reference standard. The study design involves the compilation of de-identified, retrospective PLAX-view clips acquired using the Kosmos diagnostic ultrasound system. This data was collected from two previous studies, and was not used in the training of the PLAX EF AI algorithm, or in the ECHO-300 PLAX EF pilot study.

Conditions

  • Heart
  • Heart Failure
  • Ejection Fraction
  • Left Ventricular Ejection Fraction
  • Left Ventricular Ejection Fraction Less Then or Equal to 50percent

Interventions

DEVICE

PLAX EF Manual vs. Automatic Measurement

All de-identified PLAX (Parasternal Long Axis) echocardiographic clips, along with corresponding demographic information, was collected from previously collected datasets. No additional imaging, interventions, or participant contact was performed as part of this study. Three independent, board-certified expert readers, blinded to automated outputs and to each other's assessments, manually measured LVIDd and LVIDs following ASE guidelines to produce the Reference Standard Measurements. The Kosmos EF algorithm processed each clip to generate automated LVIDd, LVIDs, and computed EF measurements to create the Automated Measurements. Automated measurements were compared to reference standard using an MAE-based methodology.

Sponsors & Collaborators

  • Memorial Healthcare System

    collaborator OTHER

  • EchoNous Inc.

    lead INDUSTRY

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2026-05-05
Primary Completion
2026-08-30
Completion
2026-09-30
FDA Device
Yes

Countries

  • United States

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07771231 on ClinicalTrials.gov