(110 days)
Not Found
Yes
The device description explicitly states that "Machine learning based view classification and border segmentation form the basis for this automated analysis."
No
The device is an image post-processing analysis software for viewing and quantifying cardiovascular ultrasound images, intended to aid diagnostic review and analysis for clinical decision-making, not to directly treat or prevent a disease.
Yes
The device "is intended to aid diagnostic review and analysis of echocardiographic data" and provides "automated estimation of several cardiac measurements" to "support qualified cardiologists, sonographers, or other licensed professional healthcare practitioners for clinical decision-making." This indicates its role in the diagnostic process.
Yes
The device description explicitly states it is "an image post-processing analysis software device" and describes its functions solely in terms of software operations on existing images. There is no mention of hardware components included with the device.
Based on the provided information, no, this device is not an IVD (In Vitro Diagnostic).
Here's why:
- IVD definition: In Vitro Diagnostics are medical devices used to examine specimens taken from the human body (like blood, urine, tissue) to provide information for diagnosis, monitoring, or screening.
- Libby™ Echo:Prio's function: Libby™ Echo:Prio processes previously acquired medical images (cardiac ultrasound images). It does not analyze biological specimens taken from the patient.
The device is a software tool for analyzing medical images, which falls under the category of medical image processing or analysis software, not In Vitro Diagnostics.
No
The input states "Control Plan Authorized (PCCP) and relevant text: Not Found," indicating the letter does not mention explicit FDA approval or clearance of a PCCP for this device.
Intended Use / Indications for Use
Libby™ Echo:Prio is software that is used to process previously acquired DICOM-compliant cardiac ultrasound images, and to make measurements on these images in order to provide automated estimation of several cardiac measurements.
The data produced by this software is intended to be used to support qualified cardiologists, sonographers, or other licensed professional healthcare practitioners for clinical decision-making.
LibbyTM Echo:Prio is indicated for use in adult patients.
Product codes (comma separated list FDA assigned to the subject device)
OIH
Device Description
Echo:Prio is an image post-processing analysis software device used for viewing and quantifying cardiovascular ultrasound images. The device is intended to aid diagnostic review and analysis of echocardiographic data, patient record management and reporting.
The software provides an interface for a skilled sonographer to perform the necessary markup on the echocardiographic image prior to review by the prescribing physician. The markup includes: the cardiac segments captured, measurements of distance, time, area, quantitative analysis of cardiac function, and a summary report.
The software allows the sonographer to enter their markup manually and/or manually correct automatically generated results. It also provides automated markup and analysis, which the sonographer may choose to accept outright, to accept partially and modify, or to reject and ignore. Machine learning based view classification and border segmentation form the basis for this automated analysis. Additionally, the software has features for organizing, displaying, and comparing to reference guidelines the quantitative data from cardiovascular images acquired from ultrasound scanners.
The following visualization, quantification and data-reporting functionalities are provided by the software:
5.4.1 Visualization:
- . 2D image review
- Cine loop review
- Secondary captures review
5.4.2 Quantification of classification, segmentation and index calculations:
- Echocardiographic View classification
- . End diastole (ED) and End systole (ES) frame identification enabling Heartbeat rate (HR) estimates.
- Ejection fraction (EF)
Notes: This is achieved via automatic left ventricle (LV) chamber endocardium segmentation, left atrium (LA) segmentation, LV myocardium (LVMC) segmentation allowing muscle thickness calculations.
5.4.3 Data reporting
All the above values are reported via a report generation initiated by the investigator.
Mentions image processing
Yes
Mentions AI, DNN, or ML
Yes
Input Imaging Modality
Ultrasound
Anatomical Site
cardiac
Indicated Patient Age Range
adult patients
Intended User / Care Setting
qualified cardiologists, sonographers, or other licensed professional healthcare practitioners / Medical facility
Description of the training set, sample size, data source, and annotation protocol
Not Found
Description of the test set, sample size, data source, and annotation protocol
Not Found
Summary of Performance Studies (study type, sample size, AUC, MRMC, standalone performance, key results)
Performance Testing demonstrated robustness and accuracy retrospectively on a diverse clinical dataset. This demonstrates consistent analysis and low inter/intra-analyst variability of the automated procedures.
The testing demonstrated view classification accuracy of 97% with an average F1 value of >96.6%, average sensitivity (Sn) of 96.8% and average Specificity (Sp) of 98.5%. The testing also demonstrated that the HR output estimate is with minimal bias (slope of 0.98 in linear regression with confidence interval of 95%) compared to the ground truth (12-lead ECG) also showing exceptional accuracy in ED/ES identification.
Finally, the prediction of the EF output using the Libby™ Echo:Prio software had a slope of 0.79 for Bivariate Linear Regression (BLS) with the 95% confidence interval (Cl) of (0.52, 0.98) compared with the annotations by four human experts. This is well within the range of typical measurement variation between different clinicians, which is usually described as inter-observer variation and can be as low as (0.37, 0.52) of the 95% Cl.
Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)
view classification accuracy of 97%
average F1 value of >96.6%
average sensitivity (Sn) of 96.8%
average Specificity (Sp) of 98.5%
HR output estimate is with minimal bias (slope of 0.98 in linear regression with confidence interval of 95%)
prediction of the EF output: slope of 0.79 for Bivariate Linear Regression (BLS) with the 95% confidence interval (Cl) of (0.52, 0.98)
Predicate Device(s): If the device was cleared using the 510(k) pathway, identify the Predicate Device(s) K/DEN number used to claim substantial equivalence and list them here in a comma separated list exactly as they appear in the text. List the primary predicate first in the list.
Reference Device(s): Identify the Reference Device(s) K/DEN number and list them here in a comma separated list exactly as they appear in the text.
Not Found
Predetermined Change Control Plan (PCCP) - All Relevant Information for the subject device only (e.g. presence / absence, what scope was granted / cleared under the PCCP, any restrictions, etc).
Not Found
§ 892.2050 Medical image management and processing system.
(a)
Identification. A medical image management and processing system is a device that provides one or more capabilities relating to the review and digital processing of medical images for the purposes of interpretation by a trained practitioner of disease detection, diagnosis, or patient management. The software components may provide advanced or complex image processing functions for image manipulation, enhancement, or quantification that are intended for use in the interpretation and analysis of medical images. Advanced image manipulation functions may include image segmentation, multimodality image registration, or 3D visualization. Complex quantitative functions may include semi-automated measurements or time-series measurements.(b)
Classification. Class II (special controls; voluntary standards—Digital Imaging and Communications in Medicine (DICOM) Std., Joint Photographic Experts Group (JPEG) Std., Society of Motion Picture and Television Engineers (SMPTE) Test Pattern).
0
Image /page/0/Picture/0 description: The image contains the logo of the U.S. Food and Drug Administration (FDA). The logo consists of two parts: the Department of Health & Human Services seal on the left and the FDA acronym along with the full name of the agency on the right. The FDA part of the logo is in blue, with the acronym in a square and the full name written out to the right of it.
Dyad Medical, Inc % Yervant Chijian Regulatory and Quality Consultant Pharmalex Pty Ltd Suite 10.4, 1 Chandos Street St. Leonards, NSW 2068 AUSTRALIA
Re: K220956
July 20, 2022
Trade/Device Name: Libby Echo:Prio Regulation Number: 21 CFR 892.2050 Regulation Name: Medical image management and processing system Regulatory Class: Class II Product Code: OIH Dated: June 17, 2022 Received: June 21, 2022
Dear Yervant Chijian:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801 and Part 809); medical device reporting of medical device-related adverse events) (21 CFR
1
- for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
Jessica Lamb. Ph.D. Assistant Director Imaging Software Team DHT8B: Division of Radiological Imaging Devices and Electronic Products OHT8: Office of Radiological Health Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
2
Indications for Use
510(k) Number (if known) K220956
Device Name Libby™ Echo:Prio
Indications for Use (Describe)
Libby™ Echo:Prio is software that is used to process previously acquired DICOM-compliant cardiac ultrasound images, and to make measurements on these images in order to provide automated estimation of several cardiac measurements.
The data produced by this software is intended to be used to support qualified cardiologists, sonographers, or other licensed professional healthcare practitioners for clinical decision-making.
LibbyTM Echo:Prio is indicated for use in adult patients.
| Type of Use (Select one or both, as applicable) | |
|---|---|
| Prescription Use (Part 21 CFR 801 Subpart D) | Over-The-Counter Use (21 CFR 801 Subpart C) |
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3
510(k) Summary – Libby™ Echo:Prio 5
General Information 5.1
| 510(k) Sponsor | Dyad Medical, Inc |
|---|---|
| Address | 215 Brighton Avenue, Suite 203 |
| Boston, MA 02134 | |
| Correspondence Person | Yervant Chijian |
| Quality and Regulatory Consultant | |
| Pharmalex Pty Ltd | |
| Contact Information | Email: Yervant.Chijian@pharmalex.com |
| Phone: +61 (0)2 9906 2984 | |
| Date Prepared | 31st March 2022 |
5.2 Subject Device
| Proprietary Name | Libby™ Echo:Prio |
|---|---|
| Common Name | Echo:Prio |
| Classification Name | System, Image Processing, Radiological |
| Regulation Number | 21 CFR 892.2050 |
| Regulation Name | Automated Radiological Image Processing Software |
| Product Code | QIH |
| Regulatory Class | II |
5.3 Predicate Device
| Proprietary Name | EchoMD Automated Ejection Fraction Software |
|---|---|
| Premarket Notification | K173780 |
| Classification Name | System, Image Processing, Radiological |
| Regulation Number | 21 CFR 892.2050 |
| Regulation Name | Picture archiving and communications system |
| Product Code | LLZ |
| Regulatory Class | II |
5.4 Device Description
Echo:Prio is an image post-processing analysis software device used for viewing and quantifying cardiovascular ultrasound images. The device is intended to aid diagnostic review and analysis of echocardiographic data, patient record management and reporting.
The software provides an interface for a skilled sonographer to perform the necessary markup on the echocardiographic image prior to review by the prescribing physician. The markup includes: the cardiac segments captured, measurements of distance, time, area, quantitative analysis of cardiac function, and a summary report.
4
Image /page/4/Picture/1 description: The image shows the logo for DYAD Medical. On the left is a blue graphic that looks like three connected water droplets. To the right of the graphic is the text "DYAD" in large, bold, dark blue letters, with the word "MEDICAL" underneath in smaller, lighter blue letters.
The software allows the sonographer to enter their markup manually and/or manually correct automatically generated results. It also provides automated markup and analysis, which the sonographer may choose to accept outright, to accept partially and modify, or to reject and ignore. Machine learning based view classification and border segmentation form the basis for this automated analysis. Additionally, the software has features for organizing, displaying, and comparing to reference guidelines the quantitative data from cardiovascular images acquired from ultrasound scanners.
The following visualization, quantification and data-reporting functionalities are provided by the software:
5.4.1 Visualization:
- . 2D image review
- Cine loop review
- Secondary captures review
5.4.2 Quantification of classification, segmentation and index calculations:
- Echocardiographic View classification
- . End diastole (ED) and End systole (ES) frame identification enabling Heartbeat rate (HR) estimates.
- Ejection fraction (EF)
Notes: This is achieved via automatic left ventricle (LV) chamber endocardium segmentation, left atrium (LA) segmentation, LV myocardium (LVMC) segmentation allowing muscle thickness calculations.
5.4.3 Data reporting
All the above values are reported via a report generation initiated by the investigator.
5.5 Indications for Use
Libby Echo:Prio is software that is used to process previously acquired DICOM-compliant cardiac ultrasound images, and to make measurements on these images in order to provide automated estimation of several cardiac measurements. The data produced by this software is intended to be used to support qualified cardiologists, sonographers, or other licensed professional healthcare practitioners for clinical decision-making.
Libby Echo:Prio is indicated for use in adult patients.
ટ.6 Substantial Equivalence
The following table demonstrates the similarities and differences between the technological characteristics of the three products. Testing demonstrates that the differences do not raise new questions of safety or effectiveness.
| Topic | Subject Device
Libby™TM Echo:Prio | Predicate Device
EchoMD Automated Ejection Fraction
Software | Substantial
Equivalence |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------|
| Intended Use/Indications for
Use | Libby™TM Echo:Prio is software that
is used to process previously
acquired DICOM-compliant | The Bay Labs, Inc. EchoMD
Automated Ejection Fraction
software is used to process | Same |
| Topic | Subject Device
Libby™ Echo:Prio | Predicate Device
EchoMD Automated Ejection Fraction
Software | Substantial
Equivalence |
| | cardiac ultrasound images, and to
make measurements on these
images in order to provide
automated estimation of several
cardiac measurements. The data
produced by this software is
intended to be used to support
qualified cardiologists,
sonographers, or other licensed
professional healthcare
practitioners for clinical decision-
making.
Libby™ Echo:Prio is indicated for
use in adult patients. | previously acquired transthoracic
cardiac ultrasound images, to store
images, and to manipulate and
make measurements on images
using a personal computer or a
compatible DICOM-compliant
PACS system in order to provide
automated estimation of left
ventricular ejection fraction. This
measurement can be used to assist
the clinician in a cardiac
evaluation. The EchoMD
Automated EjectionFraction
Software is indicatedfor use in
adult patients. | |
| Intended User | Cardiologists and sonographers | Cardiologists and sonographers | Same |
| Rx or OTC | Rx | Rx | Same |
| Intended Location | Medical facility | Medical facility | Same |
| High Level Device
Description | The Libby™ Echo:Prio is an image
post-processing analysis software
device used for viewing and
quantifying cardiovascular
ultrasound images. | EchoMD software is process
acquired transthoracic cardiac
ultrasound images, to analyze and
make measurements on images in
order to provide automated
estimation of left ventricular
ejection fraction | Same |
| Automated Chamber
analysis Features & Analysis | Yes | Yes | Same |
| Automated measurements | LV Ejection fraction (EF) | Left ventricular ejection fraction | Same |
| Machine Learning Based
Algorithm | Yes | Yes | Same |
| Operate on DICOM clips | Yes | Yes | Same |
| Automated View
Classification including:
- long axis view (PLAX)
- short axis view (PSAX)
- four-chamber view (A4C)
- five-chamber view (A5C)
- two-chamber view (A2C)
- long axis view (A3C) | Yes | Yes | Same |
| Automation Level | Fully automated, including clip
selection | Fully automated, including clip
selection | Same |
| Algorithm Confidence | Qualitative user feedback on
transthoracic cardiac
ultrasound image quality | Qualitative and quantitative user
feedback on transthoracic cardiac
ultrasound image quality | Same |
| EF Method | Single plane & biplane (with
segmentation and endocardial
trace) | Biplane (non-segmentation/ non-
endocardial trace) | Same |
| Topic | Subject Device
Libby™ Echo:Prio | Predicate Device
EchoMD Automated Ejection Fraction
Software | Substantial
Equivalence |
| Offline EF evaluation using
clips from multiple
ultrasound scanners | Yes | Yes | Same |
| Automated Ejection Fraction
Calculation | Yes | Yes | Same |
| Ejection Fraction reported | Whole number estimate
(percentage) | Whole number estimate
(percentage) | Same |
| User Confirmation/rejection
of result | Yes | Yes | Same |
| Manual editing of
automated result by user | Yes | Yes | Same |
| Physical Characteristics | Software package that operates on
off-the-shelf hardware | Software package that operates on
off-the-shelf hardware | Not equivalent
but no issues
with safety and
efficacy. |
| DICOM Standard Compliance | The software processes DICOM
compliant image data | The software processes DICOM
compliant image data | Same |
| Modalities | Ultrasound | Ultrasound | Same |
| User Interface | The software is designed for use
within a web browser on a personal
computer. | The software is designed for use
on personal computer or a
compatible DICOM-compliant
PACS system. | Not equivalent
but no issues
with safety and
efficacy. |
Table 1: Libby™ Echo:Prio Device Comparison.
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Image /page/5/Picture/0 description: The image shows the logo for DYAD MEDICAL. The logo consists of a blue, stylized image of three interconnected circles on the left, and the words "DYAD MEDICAL" in blue on the right. The word "DYAD" is in a larger font than the word "MEDICAL."
6
Image /page/6/Picture/0 description: The image contains the logo for DYAD Medical. The logo consists of two parts: a blue, abstract, interconnected shape on the left, and the text "DYAD MEDICAL" on the right. The word "DYAD" is in a larger, bolder font, while "MEDICAL" is in a smaller, thinner font.
5.7 Performance Data
Safety and performance of the Libby™ Echo:Prio has been evaluated and verified in accordance with software specifications and applicable performance standards through software verification and validation testing. Additionally, the software validation activities were performed in accordance with IEC 62304:2006/AC: 2008- Medical device software – Software life cycle processes, in addition to the FDA Guidance documents, "Guidance for the Content of Premarket Submissions for Software Contained in Medical Devices" and "Content of Premarket Submission for Management of Cybersecurity in Medical Devices."
Performance Testing demonstrated robustness and accuracy retrospectively on a diverse clinical dataset. This demonstrates consistent analysis and low inter/intra-analyst variability of the automated procedures.
The testing demonstrated view classification accuracy of 97% with an average F1 value of >96.6%, average sensitivity (Sn) of 96.8% and average Specificity (Sp) of 98.5%. The testing also demonstrated that the HR output estimate is with minimal bias (slope of 0.98 in linear regression with confidence interval of 95%) compared to the ground truth (12-lead ECG) also showing exceptional accuracy in ED/ES identification.
Finally, the prediction of the EF output using the Libby™ Echo:Prio software had a slope of 0.79 for Bivariate Linear Regression (BLS) with the 95% confidence interval (Cl) of (0.52, 0.98) compared with the annotations by four human experts. This is well within the range of typical measurement variation between different clinicians, which is usually described as inter-observer variation and can be as low as (0.37, 0.52) of the 95% Cl.
7
Image /page/7/Picture/1 description: The image contains the logo for DYAD MEDICAL. The logo consists of a blue graphic on the left and the text "DYAD MEDICAL" on the right. The graphic appears to be a stylized representation of molecules or cells, with interconnected circles in varying shades of blue. The text "DYAD" is in a bold, dark blue font, while "MEDICAL" is in a thinner, lighter blue font and is positioned below "DYAD".
Standards Applied 5.8
The standards applied for the development of the software is listed below:
- NEMA PS 3.1 3.20 2021e Digital Imaging and Communications in Medicine (DICOM) Set .
- . IEC 62304:2006/A1:2016 Medical device software - Software life cycle processes
- ISO 14971:2019 Medical Devices -- Application of Risk Management to Medical Devices ●
- IEC 62366-1 Edition 1.1 2020-06 Medical Devices -- Part 1: Application of Usability Engineering to Medical Devices
- . 21 CFR 820 Quality System Regulations
- ISO 15223-1 Medical devices — Symbols to be used with medical device labels, labelling and information to be supplied — Part 1: General requirements
Conclusion 5.9
Based on the information submitted in this premarket notification, and based on the indications for use, technological characteristics and performance testing, the Libby™ Echo:Prio raises no new questions of safety and effectiveness and is substantially equivalent to the predicate device in terms of safety, efficacy, and performance.
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Image /page/8/Picture/0 description: The image shows the logo for DYAD Medical. On the left is a blue graphic that looks like three connected water droplets. To the right of the graphic is the text "DYAD" in large, bold, blue letters, with the word "MEDICAL" underneath in smaller, thinner, blue letters.