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Diagnosing Pulmonary Tuberculosis with the Xpert MTB/RIF Test
Published on: April 9, 2012
Chest X-Ray-Based Telemedicine Platform for Pediatric Tuberculosis Diagnosis in Low-Resource Settings: Development
Juan J Gómez-Valverde1,2, Ramón Sánchez-Jacob3, José Luis Ribó4
1Biomedical Image Technologies, ETSI Telecomunicación, Universidad Politécnica de Madrid, Madrid, Spain.
Insights
A new telemedicine platform, BITScreen PTB, shows promise for improving pediatric tuberculosis diagnosis using chest X-rays in resource-limited areas. While sensitivity was low, high specificity suggests its utility for screening children with suspected TB.
Area of Science:
- Medical Imaging
- Public Health
- Digital Health
Background:
- Tuberculosis (TB) significantly impacts children globally, particularly those under five.
- Diagnosing pediatric TB is challenging due to limited access to accurate diagnostic tools in resource-limited settings.
Purpose of the Study:
- To introduce BITScreen PTB, a telemedicine web platform for evaluating pediatric pulmonary TB using digital chest X-rays (CXR) and clinical data.
- To enhance pediatric TB diagnosis and care in resource-limited environments.
Main Methods:
- Retrospective assessment of 218 pediatric CXR examinations by 3 expert readers.
- Evaluation of platform usability, assessment time, reader performance, and interreader agreement.
- Analysis of the association between CXR findings and initial diagnostic classification.
Main Results:
- The BITScreen PTB platform demonstrated high usability (average rating 4.4/5) and quick assessment times (35-110 seconds).
- CXR analysis showed low sensitivity (16.3%-28.2%) but high specificity (91.1%-98.2%) for pediatric TB.
- Air space opacification was strongly associated with initial diagnostic classification, with moderate/substantial interreader agreement for specific findings.
Conclusions:
- Telemedicine platforms like BITScreen PTB hold potential for improving access to pediatric TB diagnosis in underserved regions.
- These platforms can support systematic CXR assessment in pediatric TB research and clinical practice.
Background:
Tuberculosis (TB) remains a major cause of morbidity and death worldwide, with a significant impact on children, especially those under the age of 5 years. The complex diagnosis of pediatric TB, compounded by limited access to more accurate diagnostic tests, underscores the need for improved tools to enhance diagnosis and care in resource-limited settings.
Objective:
This study aims to present a telemedicine web platform, BITScreen PTB (Biomedical Image Technologies Screen for Pediatric Tuberculosis), aimed at improving the evaluation of pulmonary TB in children based on digital chest x-ray (CXR) imaging and clinical information in resource-limited settings.
Methods:
The platform was evaluated by 3 independent expert readers through a retrospective assessment of a data set with 218 imaging examinations of children under 3 years of age, selected from a previous study performed in Mozambique. The key aspects assessed were the usability through a standardized questionnaire, the time needed to complete the assessment through the platform, the performance of the readers to identify TB cases based on the CXR, the association between the TB features identified in the CXRs and the initial diagnostic classification, and the interreader agreement of the global assessment and the radiological findings.
Results:
The platform's usability and user satisfaction were evaluated using a questionnaire, which received an average rating of 4.4 (SD 0.59) out of 5. The average examination completion time ranged from 35 to 110 seconds. In addition, the study on CXR showed low sensitivity (16.3%-28.2%) but high specificity (91.1%-98.2%) in the assessment of the consensus case definition of pediatric TB using the platform. The CXR finding having a stronger association with the initial diagnostic classification was air space opacification (χ21>20.38, P<.001). The study found varying levels of interreader agreement, with moderate/substantial agreement for air space opacification (κ=0.54-0.67) and pleural effusion (κ=0.43-0.72).
Conclusions:
Our findings support the promising role of telemedicine platforms such as BITScreen PTB in enhancing pediatric TB diagnosis access, particularly in resource-limited settings. Additionally, these platforms could facilitate the multireader and systematic assessment of CXR in pediatric TB clinical studies.
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