Intended Use

The Imbio PHA Software device is designed to measure the maximal diameters of the right and left ventricles of the heart, the main pulmonary artery, and the ascending aorta from a volumetric CTPA acquisition and report the RV/LV and Pa/Ao ratios. PHA analyzes cases using an artificial intelligence algorithm to identify the location and measurements of the anatomy. The PHA software provides the user with annotated images showing measurements. Its results are not intended to be used on a stand-alone basis for clinical decision-making or otherwise preclude clinical assessment of CTPA cases.

Technology

Imbio's PHA Software is a set of medical image post-processing computer algorithms that together perform automated right and left ventricle, pulmonary artery, and aorta measurements from CT pulmonary angiography scans. It is a single command-line executable program that outputs annotated DICOM images and a PDF report. The software uses deep learning models for segmentation and measurement, and runs on previously generated CTPA DICOM datasets integrated as part of radiological workflow.

Performance

No clinical testing was conducted. Non-clinical testing demonstrated that measurements by the PHA Software resemble those made by expert radiologists with excellent agreement (ICC=0.94). Testing included 100 contrast-enhanced CTPA datasets from multiple centers and vendors, with three expert U.S. radiologists providing ground truth for diameter measurements. The device was found to be as safe and effective as the legally marketed predicate, Imbio RV/LV (K203256).

Predicate Devices

No predicate devices specified

Device Timeline

  • 1

    Submission

    6/26/2024

    2 months
  • 2

    FDA Approval

    8/30/2024

Other devices from Imbio, Inc

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