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A Point-of-Use Quality Assurance Tool for Digital Pathology Remote Working.

Alexander I Wright1, Emily L Clarke1,2, Catriona M Dunn1

  • 1Section of Pathology and Data Analytics, Leeds Institute of Medical Research, University of Leeds, Leeds, UK.

Journal of Pathology Informatics
|October 9, 2020
PubMed
Summary

A new Point-of-Use Quality Assurance (POUQA) tool validates remote digital pathology slide viewing conditions. This ensures accurate diagnoses are made on standard computer screens, even during the COVID-19 pandemic.

Keywords:
Digital pathologydisplay validationpsychophysical testquality assuranceremote diagnosis

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Area of Science:

  • Medical Imaging
  • Digital Pathology
  • Quality Assurance

Background:

  • The COVID-19 pandemic has strained pathology services, necessitating remote diagnostic capabilities.
  • Digital pathology enables remote diagnoses but requires optimal viewing conditions, which are often unregulated in home environments.
  • There is a lack of experimental data defining minimum display requirements for digital pathology.

Purpose of the Study:

  • To develop and present a Point-of-Use Quality Assurance (POUQA) tool for assessing remote digital pathology slide viewing conditions.
  • To provide a method for validating display screen performance before viewing digital slides in remote settings.
  • To address the need for standardized quality assurance in digital pathology due to increased remote work.

Main Methods:

  • A psychophysical test was developed, combining elements from existing quality assurance tools in pathology and radiology.
  • The POUQA tool is a web-based system designed for minimally intrusive display screen validation.
  • The test specifically assesses the discrimination of colors relevant to hematoxylin and eosin staining (±1 delta E) and evaluates the display chain's performance.

Main Results:

  • The POUQA tool evaluates the transfer of a 1 delta E color signal through the digital display chain.
  • It assesses observer contrast and color perception within the specified test color range.
  • The tool has been rapidly developed and deployed to support flexible working conditions.

Conclusions:

  • The POUQA tool offers a solution for remote assessment of viewing conditions in digital pathology.
  • It helps ensure the reliability of remote diagnoses by validating display quality.
  • This tool supports the optimization of flexible working arrangements for pathology professionals globally.