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510(k) Data Aggregation

    K Number
    K212080
    Date Cleared
    2021-09-27

    (87 days)

    Product Code
    Regulation Number
    872.1800
    Reference & Predicate Devices
    Predicate For
    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    i-Scan Imaging Plate Scanner is intended to be used for scanning and processing digital images exposed on IP Imaging Plate in dental applications.

    Device Description

    i-Scan Imaging Plate Scanner is a dental device that scans IP imaging plates that have been exposed in place of dental X-ray film and allows the resulting images to be displayed on a personal computer and stored for later recovery. It will be used by licensed clinicians and authorized technicians for this purpose. The device is an intraoral Plate Scanner, which is designed to read out intraoral Plates of the size 0, 1, 2 and 3. Intraoral plate scanners are state of the art since 2002 and are available in various designs from many companies around the world. The intraoral plates are put into the mouth of the patient, exposed to Xrays and then are read out with the device. The read-out-process is carried out with 651-665 nm laser. The laser beam is moved across the plate by an oscillating MEMS mirror. The laser beam stimulates the top coating of the plates, which consists of Xray sensitive material. Depending on the exposed dose, the coating emits different levels of light. These light particles are then requisitioned by an optical sensor (Photo Multiplier Tube/ PMT) and transferred into an electrical output signal is digitalized and is the data for the digital X-ray image. The data is transmitted via WIFI to a computer. Before the plate is discharged, the remaining data is erased by a LED-PCB. The user chooses which size of plate he must use and prepares the device by inserting the appropriate plate insert into the device. He then exposes the plate and then puts the plate directly into the insert by pushing it out of the light protection envelope. The user closes the light protection over and starts the read-out process. After the read out process the picture is transmitted to the connected computer, the picture can be viewed, and the IP is erased and ready to use for the next acquisition.

    AI/ML Overview

    The provided document, a 510(k) summary for the i-Scan Imaging Plate Scanner, does not contain information about acceptance criteria or a study proving the device meets specific performance metrics in the way typically expected for an AI/ML medical device. This device is an X-ray imaging plate scanner, not an AI-powered diagnostic or assistive tool.

    Therefore, many of the requested sections (e.g., sample size for test set, data provenance, number of experts, adjudication method, MRMC study, standalone performance, training set details) are not applicable to the information provided in this document.

    However, I can extract information related to performance testing and comparison with a predicate device, which are relevant to the device's substantial equivalence determination.

    Here's a breakdown of the available information based on your request, with "Not Applicable (N/A)" for criteria not found or relevant to this type of device:


    1. Table of Acceptance Criteria and Reported Device Performance

    The document does not explicitly state "acceptance criteria" for clinical performance. Instead, it compares the subject device's technical specifications to those of a predicate device (Duerr Dental AG ScanX Intraoral View). The performance testing conducted was against international standards for X-ray imaging devices.

    CharacteristicAcceptance Criteria (from Predicate/Standard)Reported Device Performance (i-Scan Imaging Plate Scanner)Discussion/Compliance
    Image Quality
    Theoretical ResolutionsPredicate: 10, 20, 25 or 40 LP/mm10 or 33 LP/mmThe difference in theoretical resolutions does not affect the operating principle. Image quality distinctness is such that it does not affect the effectiveness of the device.
    MTFPredicate: More than 45% at 3 lp/mmMore than 45% at 3 lp/mmIdentical.
    DQEPredicate: More than 7.5% at 3 lp/mmMore than 21.0% at 3 lp/mmNote 5 details that the subject device's DQE is higher. When spatial frequency is lower than 3lp/mm, DQE > 29% and MTF > 45%. When spatial frequency is higher than 7lp/mm, DQE < 1% implying it does not have the ability of resolution. The minor deviations in DQE, tested based on IEC62220-1, were attributed to the dental application and did not adversely affect image quality as demonstrated by solid-state device testing.
    Image data bit depthPredicate: 16 bits16 bitsIdentical.
    Other Technical Characteristics
    Indication for UsePredicate: Scanning and processing digital images exposed on Phosphor Storage Plates (PSPs) in dental applications.Scanning and processing digital images exposed on IP Imaging Plate in dental applications.Identical.
    Mechanical DesignPredicate: Two orthogonal directional scanning.Line-by-line scanning pattern.Note 1: Different scanning methodology but collects the same data and processes for visual imaging. Supports the same intended use and does not raise issues of safety and effectiveness.
    Electrical DesignPredicate: Light with ~380nm wavelength from plate, collected and formed into image.Light with ~380nm wavelength from plate, collected and formed into image.Identical.
    Image ScanningPredicate: Laser/Photomultiplier TubeLaser/Photomultiplier TubeIdentical.
    Residual Image ErasingPredicate: Inline erasing function.Inline erasing function.Identical.
    Phosphor PlatesPredicate: Sizes 0, 1, 2, 3, 4Sizes 0, 1, 2, 3Note 3: Subject device offers four plate sizes vs. predicate's five. Does not affect effectiveness as the sizes offered are the same as the predicate.
    Imaging SoftwarePredicate: DBSWIN/VistaEasyAir-dental-woodpeckerNote 7: Different software but both followed FDA guidance for software in medical devices and passed performance testing, demonstrating functionality to convert digital data to acceptable images.
    Applicable StandardsPredicate: ANSI AAMI ES60601-1, IEC 60601-1-2, IEC 62220-1, IEC 61223-3-4, IEC 60825-1ANSI AAMI ES60601-1, IEC 60601-1-2, IEC 62220-1, IEC 61223-3-4, IEC 60825-1Identical (compliance demonstrated in Performance Testing section).

    2. Sample size used for the test set and the data provenance (e.g. country of origin of the data, retrospective or prospective)

    • Sample Size: Not applicable. This device is an imaging hardware device, not an AI/ML algorithm evaluated on a dataset of patient images. Performance testing was conducted on the device itself against technical standards.
    • Data Provenance: Not applicable.

    3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts (e.g. radiologist with 10 years of experience)

    • Number of Experts: Not applicable. Ground truth, in the context of an AI/ML device, would involve expert annotations of medical images. For this hardware device, performance was measured against physical standards and technical specifications.
    • Qualifications of Experts: N/A

    4. Adjudication method (e.g. 2+1, 3+1, none) for the test set

    • Adjudication Method: Not applicable. No expert clinical review for ground truth was performed for this type of device.

    5. If a multi-reader multi-case (MRMC) comparative effectiveness study was done, If so, what was the effect size of how much human readers improve with AI vs without AI assistance

    • MRMC Study: No. This device is an imaging plate scanner, a hardware component for acquiring digital dental X-ray images, not an AI-assistive technology for human readers.
    • Effect Size: Not applicable.

    6. If a standalone (i.e. algorithm only without human-in-the-loop performance) was done

    • Standalone Performance: Not applicable. This device is not an algorithm, but a hardware scanner. Its "performance" is measured by its ability to capture and process images according to technical standards.

    7. The type of ground truth used (expert consensus, pathology, outcomes data, etc.)

    • Type of Ground Truth: Not applicable in the clinical sense. The "ground truth" for the performance testing of this device would involve measurements against established physical standards and benchmarks, as detailed in the cited IEC standards (e.g., IEC 62220-1 for Detective Quantum Efficiency).

    8. The sample size for the training set

    • Sample Size: Not applicable. This device is not an AI/ML algorithm that requires a training set.

    9. How the ground truth for the training set was established

    • Ground Truth Establishment: Not applicable.
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