Overview

   

Accu-Chek SugarView/GreenDot is a mobile application that enables a user to measure and track their blood glucose. A user will take series of images of their blood glucose measurement strip, and the application will calculate the blood glucose measurement using computer vision algorithms. The application will present the results to the user and allow them to track their progress over time. The application also allows the user to set goals and track their history of achieving these goals.

The application communicates with Gigya for user registration and authentication, and with IPP for uploading blood glucose information from the application.

When the app is online it sends the data to IPP backend using:

  • AWS S3 Bucket: a native object storage server provided by AWS to storage all picture files.
  • FHIR Bundle: a JSON file containing the required information about each measurement. This FHIR bundle is stored in the FHIR Server hosted on IPP.
  • Back Up Bucket: S3 Bucket - User Data / application State (*) (measurement information except image)

Requirements

   

Scope

When measurements are taken, test strip images, measurement details and device information are uploaded from the application to IPP.

This only occurs at the time of the test. If the application is offline at the time of the test results, the test images are not saved and nothing is sent to IPP.

 

Steps of Greendot app during the upload process.

Step From To Communication Description
1 GreenDot STS Service send access_key (token form Gigya login)
2 STS Service GreenDot STS returns credentials to access AWS S3 buckets and also the encrypted PatientId.
3 GreenDot AWS S3 put object "blank-image" as PNG encoded as Base64
4 GreenDot AWS S3 put object "final-image" as PNG encoded as Base64
5 GreenDot AWS S3 put object "bundle" as a JSON format document following the FHIR implemention

   

Use Cases

Use Case Summary Comments
1 GreenDot App sends BG measurements with even timings Blank and final images along with events like after_fast, after_meal, before_meal, after_exercise, before_exercise, after_exercising, other
2 GreenDot App sends a goal for BG measurements Goal (or Measurement Guideline CarePlan) is sent in a care plan (Master Diabetes Management CarePlan) related to a patient.
3 GreenDot App sends BG measurements related to a goal GreenDot is responsible of the relationship BG measurement, CarePlan ('Master Diabetes Management CarePlan') + Goal (or 'MeasurementGuideline CarePlan').
4 GreenDot App sends color card information color card Type id ; color card Lot Id
5 GreenDot App sends also unsuccessful BG measurements Error statistic; Log files
6 GreenDot App sends Research study ID and Research subject ID This is the data from a different application that is meant for Research studies and only for data lake integration and will not be ingested to FHIR

   

Data Points

Data Point Description FHIR Resource & Element Remarks FHIR sample
encrypted PatientId (FHIR ID) Who and/or what the observation is about observation.performer observation.subject.reference GreenDot app calls STS service and
get AWS Credentials,plus encrypted Patient FHIR ID as:response.fhirId		 sample
software version software version running on the device device.version VersionNumber.appVersion from library 'react-native-version-number'
that dynamically checks for the version build number		 sample
software version software version running on the device messageHeader.source.version VersionNumber.appVersion from library 'react-native-version-number'
that dynamically checks for the version build number		 sample
manufacturer The device in this case refers to the App itself and not the phone, hence Roche set as a manufacturer. device.manufacturer APP.MANUFACTURER = 'Roche' sample
device serial number Serial number of the device deviceComponent.productionSpecification.productionSpec specType.coding.code: serial-number android.os.Build.FINGERPRINT sample
device model Part number or model number of the device deviceComponent.productionSpecification.productionSpec specType.coding.code: part-number android.os.Build.MODEL sample
device firmware What firmware revision is used for this device? deviceComponent.productionSpecification.productionSpec specType.coding.code: firmware-revision android.os.Build.VERSION.SDK_INT sample
operation system version What software revision is used for this device? deviceComponent.productionSpecification.productionSpec specType.coding.code : software-revision android.os.Build.DEVICE sample
type of metric Unit of Measure for the Metric deviceMetric.unit (coding) DEVICE_METRIC_UNIT.MG_DL = system: 'http://loinc.org', code: '2339-0',display: 'Glucose [Mass/volume] in Blood', sample
blood glucose measurement rating This extension is used to inform in what event of the day does the observation occurs. like after_fast, after_meal, before_meal, after_exercise, before_exercise, after_exercising, other observation.extension - observation-event-timing com.roche.greendot.engine.finalValueDetected.getMeasurement().getRating().name() sample
time event classification It is used to inform the rating from the glucose measurements. Possible ratings are: Not classified, Very low, Low, Good, Very good, High, Very high and Extremely high. observation.extension - observation-bgmRating currentMeasurement.bgmType sample
blood glucose measurement value Actual measurement value result observation.valueQuantity.value com.roche.greendot.engine.finalValueDetected.getMeasurement().getValue() sample
blank-image Test strip image taken before BG test observation.extension - observation-reference com.roche.greendot.engine.finalValueDetected.getImages().getBlank() sample
final-image Test strip image taken after BG test observation.extension - observation-reference com.roche.greendot.engine.finalValueDetected.getImages().getFinal() sample
goal measurement guideline New profile - Measurement guideline plan sample
colorCardTypeId Design type id of the color card used for the measurement extension on deviceMetric resource - devicemetric-color-card-info sample
colorCardLotId Lot id of the color card used for the measurement extension on deviceMetric resource - devicemetric-color-card-info sample
Observation status Status of the observation whether successful or not Observation.status sample
Error statistic code Error statistic code which denotes the errors that occured during the process Observation-EWM sample
Images related to the unsuccessful measurement could be both or one or none of the images observation.extension - observation-reference - path same as the successful images sample
Log files generated during the measurement process there will be 2 log files - measurementLogFile and featureExtractionLogFile observation.extension (EWM) - observation-reference-files sample

   

Solution Architecture

   

Description Link Comments
GreenDot MVP Online version https://confluence.rochedc.accentureanalytics.com/display/ARCGOV/GreenDot+MVP+Online+version
SugarView 1.1 https://confluence.rochedc.accentureanalytics.com/display/ARCGOV/SugarView+1.1
SugarView CE Label (WIP) https://confluence.rochedc.accentureanalytics.com/pages/viewpage.action?pageId=46465604
SugarView CE Label bug fixing https://confluence.rochedc.accentureanalytics.com/display/ARCGOV/SugarView+Architecture

 

High-level requirements/Detailed Analysis

   

Description Link Comments
Requirements in scope for MVP https://confluence.rochedc.accentureanalytics.com/display/GD/Data+Requirements
Backend Requirements https://confluence.rochedc.accentureanalytics.com/display/GD/Backend+Requirements
Data Platform to support FHIR Goals for GreenDot https://confluence.rochedc.accentureanalytics.com/display/RI/1.12.2.1+High-Level+Functional+Requirements
GreenDot Goals https://confluence.rochedc.accentureanalytics.com/x/WQKrAw
Color card information https://confluence.rochedc.accentureanalytics.com/x/Dx8XB
Unsuccessful BG measurements https://confluence.rochedc.accentureanalytics.com/x/k4ZBB

 

Profiles

List of profiles that are relevant to this application