Machine Learning-assisted Analysis of Microcirculation Patterns and Parameters
NCT ID: NCT04957303
Last Updated: 2022-07-13
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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UNKNOWN
800 participants
OBSERVATIONAL
2020-08-03
2024-04-30
Brief Summary
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Detailed Description
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In the first stage, the microcirculation videos and the related information are included in a de-identified manner. Each microcirculation video in the database will have a unique code. The video-related data will include the patient's height, weight, blood pressure, heartbeats, health status, major diseases, laboratory examination values, video quality description, automated vascular analysis (AVA) 3 software analysis results including total vessel density (TVD), perfused vessel density (PVD), proportion of perfused vessels (PPV), microvascular flow index (MFI), and heterogeneity index (HI). The length of each micro-cycle video is 4-6 seconds, and there are 25 frames per second. Take a picture as a representative image, each video can correspond to 4 images, and each micro-circulation image will also be marked with its image quality. Machine learning model will be trained for distinguishing the quality of videos and images. Only good-quality videos and images will be used for further analysis.
In the second stage, 80% of the microcirculation videos and images will be used for training and validation to find the best model, and then the remaining 20% of microcirculation videos and images will be used to test the model performance. The first training purpose is to automatically distinguish the size of blood vessels, calculate TVD, and draw a histogram of the number of microvessels of different diameters. The second training purpose is to measure the blood flow velocity in each small vessel and calculate PVD, MFI, and HI values.
Conditions
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Study Design
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COHORT
RETROSPECTIVE
Interventions
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sublingual microcirculation video recording
The sublingual microcirculation videos were recorded by video microscope
Eligibility Criteria
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Inclusion Criteria
Exclusion Criteria
20 Years
ALL
Yes
Sponsors
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National Taiwan University Hospital
OTHER
Responsible Party
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Locations
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National Taiwan University Hospital
Taipei, , Taiwan
Countries
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Central Contacts
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Facility Contacts
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Other Identifiers
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202003094RINA
Identifier Type: -
Identifier Source: org_study_id
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