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510(k) Data Aggregation

    K Number
    K241499
    Date Cleared
    2024-06-13

    (16 days)

    Product Code
    Regulation Number
    892.2050
    Reference & Predicate Devices
    Why did this record match?
    Applicant Name (Manufacturer) :

    ACULA Technology Corp.

    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    UMD5-21B01 is indicated for use in displaying radiological images (including full-field digital breast tomosynthesis) for review, analysis, and diagnosis by trained medical practitioners.

    Device Description

    UMD5-21B01 is a 5 mega pixels 21.3" color LCD display for viewing medical images including mammography and digital breast tomosynthesis. The resolution of the display is 2,048 x 2,560 pixels (5MP) with a pixel pitch of 0.165 mm and wide angle LCD technology (IPS) support Dual-link DVI and Displayport signals from workstation or personal computer.

    Since factory calibrated 3 display modes, each of which is characterized by a specific curve (including DICOM GSDF), a specific luminance range and a pre-defined color temperature, are stored in Lookup Table (LUT) within the display, the tone curve is e.g. DICOM compliant regardless of the display controller used.

    AcuCal, a general name for the calibration and quality control functions of UMD-series product, includes corresponding firmware (AcuCal-Pro) and management application of PC (AcuCal Manage). AcuCal-Pro is the controlling firmware of this LCD display. AcuCal-Pro can perform the luminance calibration without PC or workstation and also includes the quality control scheme to make sure display quality, especially DICOM conformance. AcuCal Manage is a PC application for managing a group of displays.

    AI/ML Overview

    The provided text is a 510(k) summary for a medical display device (ACULA Technology Corp.'s UMD5-21B01). This document describes the device, its intended use, and compares it to a predicate device to establish substantial equivalence.

    However, the nature of this document (a 510(k) summary for a display device) means that it does not include the type of detailed clinical study information typically associated with AI/ML-based medical devices or devices that generate diagnostic assessments needing complex acceptance criteria and ground truth establishment.

    Instead, the performance data section focuses on bench tests related to the display's technical characteristics, such as spatial resolution, luminance, contrast, and DICOM conformance. These tests are conducted to ensure the display accurately presents medical images as per industry standards (like TG18 guidelines), which is a different kind of "acceptance criteria" than what would be applied to an AI algorithm predicting disease.

    Therefore, many of the specific questions you asked (e.g., sample size for test set, number of experts for ground truth, MRMC studies, standalone performance of an algorithm, training set size) are not applicable to this device and the information provided in this 510(k) summary.

    I will fill in the table and address the relevant points based on the provided text, indicating "Not Applicable" or "Not Provided" where the information does not exist for this type of device and submission.

    Acceptance Criteria and Study Details for UMD5-21B01 Display Device

    1. Table of Acceptance Criteria and Reported Device Performance

    As this is a display device, the acceptance criteria relate to its imaging performance characteristics rather than diagnostic accuracy measures (like sensitivity/specificity for an AI algorithm). The document refers to "bench tests" and conformance to "TG18 guideline" and "DICOM GSDF." The table below summarizes the types of measurements performed, which serve as the "acceptance criteria" and the reported "performance" is that the device meets these standards (implicitly, as it gained clearance).

    Acceptance Criteria (Bench Test Type)Reported Device Performance (Implicitly Met for Clearance)
    Measurement of spatial resolution (MTF)Performed; Conforms to standards (e.g., TG18)
    Measurement of pixel aperture ratioPerformed; Conforms to standards (e.g., TG18)
    Maximum allowed number for each type of pixel defects/faultsPerformed; Conforms to standards (e.g., TG18)
    Visual check of presence or absence of miscellaneous artifactsPerformed; Conforms to standards (e.g., TG18)
    Measurement of temporal responsePerformed; Data provided by Innolux
    Measurements of maximum and minimum luminancePerformed; Achievable values verified
    Verification of DICOM GSDF conformancePerformed; Conforms to DICOM GSDF (TG18 guideline)
    Measurement of angular dependency of luminance responsePerformed; Conforms to standards (e.g., TG18)
    Measurement of noise (NPS)Performed; Conforms to standards (e.g., TG18)
    Measurement of display reflections (specular, diffuse, glare)Performed; Conforms to standards (e.g., TG18)
    Measurement of small-spot contrast ratioPerformed; Conforms to standards (e.g., TG18)
    Measurement of chromaticity non-uniformity characteristicsPerformed; Conforms to standards (e.g., TG18)
    Measurement of luminance non-uniformity characteristicsPerformed; Conforms to standards (e.g., TG18)

    2. Sample size used for the test set and the data provenance

    • Sample Size: Not applicable in the context of image data for diagnostic performance. The "test set" here refers to the device itself undergoing various physical and photometric measurements. Typically, a single production unit or a small number of units are tested to confirm design specifications.
    • Data Provenance: Not applicable. The tests are bench tests of the display hardware and its performance, not studies on image data.

    3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts

    • Not applicable. Ground truth as typically defined for AI algorithms (e.g., disease presence) is not established for a display device. The "ground truth" for these tests are objective physical measurements against established industry standards (like TG18 guidelines).

    4. Adjudication method for the test set

    • Not applicable. As no human interpretation of images for ground truth labeling is involved, there is no need for adjudication.

    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

    • Not applicable. This is a display device, not an AI-assisted diagnostic tool. No MRMC study was performed or needed.

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

    • Not applicable. This is a display device, not a standalone algorithm. The "performance" is its ability to accurately display images, which is assessed through bench testing.

    7. The type of ground truth used

    • Not applicable in the sense of clinical ground truth (e.g., pathology, outcomes). The "ground truth" for the device's technical performance is defined by established industry standards, measurement protocols (e.g., AAPM TG18), and physical metrology.

    8. The sample size for the training set

    • Not applicable. This is a display device, not an AI system that undergoes training.

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

    • Not applicable.
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    K Number
    K233336
    Date Cleared
    2024-05-21

    (235 days)

    Product Code
    Regulation Number
    892.2050
    Reference & Predicate Devices
    Why did this record match?
    Applicant Name (Manufacturer) :

    ACULA Technology Corp

    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    The 3MP Color LCD Display UMD3-21B01) is indicated for use in displaying radiological images for review, analysis, and diagnosis by trained medical practitioners. The display is not intended for mammography.

    Device Description

    UMD3-21B01 (MD3-21B01) is a 3 mega pixels 21.3" color LCD display for viewing medical images, not including mammography. The resolution of the display is 1,536 x 2,048 pixels (3MP) with a pixel pitch of 0.2115 mm and wide angle LCD technology (IPS) support Dual-link DVI and Displayport signals from workstation or personal computer.

    Since factory calibrated 3 display modes, each of which is characterized by a specific curve (including DICOM GSDF), a specific luminance range and a pre-defined color temperature, are stored in Lookup Table (LUT) within the display, the tone curve is e.g. DICOM compliant regardless of the display controller used.

    AcuCal, a general name for the calibration and quality control functions of MD-series product, includes corresponding firmware (AcuCal-Pro) and management application of PC (AcuCal Manage). AcuCal-Pro is the controlling firmware of this LCD display. AcuCal-Pro can perform the luminance calibration without PC or workstation and also includes the quality control scheme to make sure display quality, especially DICOM conformance. AcuCal Mange is a PC application for managing a group of displays.

    AI/ML Overview

    The provided text describes a 510(k) submission for a medical display device, the 21.3" 3MP Color LCD Display UMD3-21B01 (MD3-21B01). This document focuses on demonstrating substantial equivalence to a predicate device, rather than proving that an AI/ML algorithm meets acceptance criteria through a specific study design (e.g., MRMC).

    The document is about a display device, not an AI/ML algorithm. Therefore, many of the requested criteria (e.g., sample size for test/training sets, number of experts for ground truth, adjudication method, MRMC study, standalone algorithm performance) are not applicable to the type of device described.

    However, I can extract information related to the performance data and the "acceptance criteria" as they apply to a display device being cleared for diagnostic imaging.

    Here's an interpretation of the performance data that can be framed as "acceptance criteria" for a medical display device, based on the provided text:

    Acceptance Criteria and Reported Device Performance for a Medical Display Device

    Since the device is a medical display, the acceptance criteria relate to its image quality and conformance to standards relevant for medical imaging. The performance data section describes tests performed to ensure the display meets these expectations.

    1. A table of acceptance criteria and the reported device performance

    The document doesn't explicitly list "acceptance criteria" as pass/fail thresholds for each test, but rather describes the measurements taken and implies that the device performed adequately to demonstrate substantial equivalence. The predicate device's specifications act as an implicit benchmark for many of these performance characteristics.

    Acceptance Criterion (Test Performed)Reported Device Performance (UMD3-21B01)Comparison/Context (Predicate Device)
    Measurement of spatial resolution (MTF)Performed as per "Guidance for Industry..."Not explicitly stated for predicate in comparison table, but general expectation for diagnostic displays.
    Measurement of pixel aperture ratioPerformed as per "Guidance for Industry..."Not explicitly stated for predicate.
    Maximum number allowed for each type of pixel defects/faultsAddressed as per "Guidance for Industry..."Not explicitly stated for predicate.
    Visual check of miscellaneous artifacts (TG18 guideline)Assessed as per AAPM TG18 guidelineNot explicitly stated for predicate.
    Measurement of temporal responsePerformance data provided by Innolux (LCD panel vender)Predicate device's response time is 25ms (On/Off), proposed device is also 25ms (On/Off).
    Measurements of maximum and minimum luminancePerformed as per "Guidance for Industry..."Predicate device's brightness (typical) is 1,000cd/m2, recommended brightness for is 500cd/m2. Proposed device matches these specifications.
    Verification of DICOM GSDF conformance (TG18)Verified as specified in TG18; tone curve is DICOM compliant.Not explicitly stated for predicate in comparison table, but implicit for a medical display. "AcuCal-Pro" (firmware) on proposed device ensures DICOM conformance,
    predicate uses "Beacon Monitor Manage". Both achieve appropriate calibration for medical image viewing.
    Measurement of angular dependency of luminance responsePerformed in horizontal, vertical, and diagonal directionsPredicate device's viewing angle is Horizontal: Typ.178, Vertical: Typ.178. Proposed device matches this.
    Measurement of chromaticity non-uniformity (TG18)Performed as specified in TG18 guidelineDisplay type is Color (IPS) for both, so uniformity is expected.
    Contrast Ratio (typical)1500:1Predicate device also 1500:1.
    Display Colors10-bit (DisplayPort): 1.073 billion (1024 from a palette of 16,384 tones), 8-bit (DVI): 16.77 million (256 from a palette of 16,384 tones)Predicate device has identical display color capabilities.
    Quality-control SoftwareAcuCal (AcuCal-Pro firmware, AcuCal Manage PC app) performs luminance calibration and quality control (DICOM conformance).Predicate device uses "Beacon Monitor Manage". Both serve similar quality control functions, "different design scheme" but no impact on safety/effectiveness.
    SensorsBacklight sensor, Integrated front sensor, Ambient light sensorPredicate device has identical sensors.
    Luminance calibration toolsIntegrated optical sensor, External optical sensor, Calibration software: AcuCal-ProPredicate device has Integrated optical sensor, External optical sensor, Calibration software: Beacon Monitor Manage. "Different design scheme" but no impact on safety/effectiveness.

    2. Sample size used for the test set and the data provenance
    The document does not detail a "test set" in the context of an AI/ML algorithm. Instead, it describes performance tests conducted on the physical display device itself. The provenance of this performance "data" would be the manufacturing site (Taiwan, where ACULA Technology Corp. is located) and the testing procedures applied to the specific model (UMD3-21B01/MD3-21B01). It is device performance testing, not clinical data.

    3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts
    This is not applicable as the submission is for a medical display, not an AI/ML diagnostic tool that requires ground truth established by experts. The "ground truth" for a display is its physical performance characteristics measured against industry standards (e.g., DICOM GSDF, AAPM TG18).

    4. Adjudication method (e.g. 2+1, 3+1, none) for the test set
    Not applicable. This is for an AI/ML algorithm's performance on a dataset, not a display's physical performance verification.

    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
    Not applicable. This is not an AI/ML device.

    6. If a standalone (i.e. algorithm only without human-in-the-loop performance) was done
    Not applicable. This is not an AI/ML device.

    7. The type of ground truth used (expert consensus, pathology, outcomes data, etc)
    The "ground truth" for the display's performance is established by physical measurement standards and industry guidelines, such as the DICOM GSDF (Grayscale Standard Display Function) and AAPM Task Group 18 (TG18) guidelines. These are objective, quantifiable standards for display performance in medical imaging.

    8. The sample size for the training set
    Not applicable. The device is a display, not an AI/ML algorithm that requires a training set.

    9. How the ground truth for the training set was established
    Not applicable.

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