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510(k) Data Aggregation

    K Number
    K211432
    Device Name
    Myomics Q
    Manufacturer
    Date Cleared
    2021-11-23

    (200 days)

    Product Code
    Regulation Number
    892.2050
    Reference & Predicate Devices
    Predicate For
    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    Myomics Q is intended to be used for viewing, post-processing and analysis of cardiac magnetic resonance (MR) images in a Digital Imaging and Communications in Medicine (DICOM) Standard format. It enables:

    • Importing cardiac MR images in DICOM format.
    • Supporting clinical diagnostics by analysis of cardiac MR images using display functionality such as panning, windowing, zooming through series/slices of the images.
    • Supporting clinical diagnostics analysis of the heart in cardiac MR images and signal intensity.
    • Software package is designed to support the physician compliance assessment, document and follow up heart disease by cardiac MRI.

    It shall be used by qualified medical professionals, experienced in examining cardiovascular MR images, for the purpose of obtaining diagnostic information as part of a comprehensive diagnostic decision-making process. This device is a software application that can be used as a stand-alone product or in a network environment.

    The target population for the device is not restricted, however the image acquisition by a cardiac MR scanner may limit the use of the device for certain sectors or the public.

    Device Description

    Myomics Q is software application for evaluating cardiovascular images in a DICOM Standard format. The software can be used as a stand-alone product that can be integrated into a hospital or private practice environment. This device has a graphical user interface which allows users to analyze cardiac MR Images qualitatively and quantitatively.

    AI/ML Overview

    Here's a breakdown of the acceptance criteria and study details for the Myomics Q device, based on the provided text:

    1. Table of Acceptance Criteria and Reported Device Performance

    The document does not explicitly state formal acceptance criteria with specific thresholds for each performance metric. Instead, the performance tests verify the proper functioning of features and quantitative comparisons against a reference device within a certain margin. The implicit acceptance criterion for the quantitative comparisons is that the results should be "very similar" and fall within a ±5% deviation from the reference device.

    Acceptance Criteria (Implicit)Reported Device Performance
    Functional Verification
    Proper installation of Myomics Q on appropriate OS (Window)Passed (SPPT001)
    Import cardiac MR Images function working properlyPassed (SPPT002)
    Export cardiac MR Images function working properlyPassed (SPPT003)
    Patient information function working properlyPassed (SPPT004)
    Series overview function working properlyPassed (SPPT005)
    Contour drawing functions (Endocardium, Epicardium, Move, Pinch, Nudge, Curved Line, Free Hand, Smoothing, Undo, Redo, Restart, Delete, Confirm, Zooming, Panning, Windowing) working properlyPassed (SPPT006)
    T1 analysis function working properly (T1 Image or T1 Map display)Passed (SPPT007)
    T2 analysis function working properly (T2 Image or T2 Map display)Passed (SPPT008)
    LGE analysis function working properly (LGE Image display)Passed (SPPT009)
    Quantitative Comparison (Implicit Acceptance Threshold: ≤ ±5% deviation from cvi42)
    Results of Myomics Q are very similar to cvi42 in polar map report in Native T1 analysisThe results of Myomics Q did not show a difference of more than ±5% compared to the results of cvi42 (95% of cvi42 results < Myomics Q Results < 105% of cvi42 results). This deviation is attributed to user contour accuracy and is not considered to affect clinical performance. (SPPT010)
    Results of Myomics Q are very similar to cvi42 in polar map report in Post T1 analysisThe results of Myomics Q did not show a difference of more than ±5% compared to the results of cvi42 (95% of cvi42 results < Myomics Q Results < 105% of cvi42 results). This deviation is attributed to user contour accuracy and is not considered to affect clinical performance. (SPPT011)
    Results of Myomics Q are very similar to cvi42 in polar map report in T2 analysisThe results of Myomics Q did not show a difference of more than ±5% compared to the results of cvi42 (95% of cvi42 results < Myomics Q Results < 105% of cvi42 results). This deviation is attributed to user contour accuracy and is not considered to affect clinical performance. (SPPT012)

    2. Sample Size Used for the Test Set and Data Provenance

    • Sample Size: The document does not specify the sample size (number of cases or images) used for the performance tests (SPPT010, SPPT011, SPPT012). It only refers to "the results" and "data."
    • Data Provenance: The document does not provide information on the country of origin of the data or whether the data was retrospective or prospective.

    3. Number of Experts Used to Establish the Ground Truth for the Test Set and Qualifications

    • The document does not mention the use of experts to establish ground truth for the test set. The quantitative performance tests (SPPT010, SPPT011, SPPT012) compare Myomics Q's results against those of the cvi42 software (the reference device/control group), which itself is a cleared product. The discussion indicates that a "user contour accuracy" within the software impacts the results, implying the ground truth for comparison is derived from the cvi42 output based on how contours are drawn.

    4. Adjudication Method for the Test Set

    • No adjudication method is mentioned or implied, as the comparison is primarily between the subject device (Myomics Q) and a reference software (cvi42). The variability is explicitly linked to "how the contour is drawn," suggesting a single user, or an assumed consistent user, performed the contouring on both systems for comparison.

    5. Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study

    • No MRMC comparative effectiveness study was done. The study described is a bench test comparing the subject device's performance to a reference software, not comparing human readers with and without AI assistance.

    6. Standalone Performance (Algorithm Only Without Human-in-the-Loop Performance)

    • Yes, a standalone performance assessment was conducted for Myomics Q. The "Performance Test" section (7.3) and "Discussion" (7.4) describe "bench tests" where Myomics Q's output is compared directly to cvi42's output. The document explicitly states, for quantitative comparison, that "the quantitative is depending on the user contour accuracy," suggesting the user interaction (drawing contours) is part of the process that leads to the final quantitative results being compared. However, the evaluation is of the software's calculation capabilities post-contouring, rather than a human-in-the-loop scenario. The device itself is a "software application" for analysis.

    7. Type of Ground Truth Used

    • The "ground truth" for the quantitative performance comparisons (SPPT010, SPPT011, SPPT012) appears to be the results obtained from the cvi42 software (the reference device), which served as the control group in the bench tests.

    8. The Sample Size for the Training Set

    • The document does not provide any information regarding the sample size used for the training set. This is a post-market notification for a new device, and the data provided focuses on validation rather than training details.

    9. How the Ground Truth for the Training Set Was Established

    • The document does not provide any information on how the ground truth for the training set was established, as details about the training set itself are absent.
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