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Development of a Semaphore of Anemia: Screening Method Based on Photographic Images of the Ungueal Bed Using a
Insights
A novel anemia screening tool analyzes fingernail bed images to detect the disease, offering a quick, painless alternative to blood tests. This method shows high accuracy, potentially improving early detection in children and preventing long-term health issues.
Area of Science:
- Medical diagnostics
- Computational imaging
Background:
- Anemia affects 43% of children globally, with cognitive development impairments persisting even after recovery.
- Poor screening coverage in regions like Peru is linked to parental fear of causing pain during blood tests.
- Anemia manifests as pallor in the hands, fingers, and nail beds, offering a visual indicator.
Purpose of the Study:
- To develop and validate a non-invasive screening tool for anemia detection using fingernail bed imagery.
- To assess the efficacy of a photographic semaphore system for anemia risk stratification.
- To reduce reliance on traditional blood tests and expedite anemia screening processes.
Main Methods:
- Collected 6 photographic images of each participant's right fingernail bed (n=60).
- Processed images to extract regions of interest from fingernails.
- Utilized a neural network trained on image datasets to predict anemia risk.
Main Results:
- The proposed anemia semaphore achieved a sensitivity of 0.79 and specificity of 0.91.
- Demonstrated potential for rapid anemia risk assessment.
- Significantly reduced evaluation time from 15 minutes to 1 minute compared to current methods.
Conclusions:
- The fingernail bed photographic semaphore shows promise as an effective, non-invasive anemia screening method.
- This tool can potentially improve screening coverage by alleviating parental concerns about pain.
- The system offers a faster and potentially more accessible alternative to traditional anemia testing, especially for pediatric populations.
Abstract:
Anemia is a disease present worldwide. High prevalence of anemia (43%) is found in the child population and its main long-term effect (slow cognitive development) can remain even if the disease has disappeared. One of the main reasons for the high prevalence of anemia in Peru is the poor screening coverage during the growth of the child due to the parents' fear of infringing pain on their children. We take advantage that anemia produces pallor in the hands, fingers and ungueal bed to develop a semaphore for this disease. This screening tool uses photographic images of the patient's ungueal bed to determine if they have a high, medium or low possibility of having anemia. Sixty people participated in the study and 6 photographic images for each participant's right hand were captured. The images were processed to extract regions of interest from each of the fingernails. Datasets were generated and a neural network was used to predict the risk of anemia. Initial results show that the proposed semaphore of anemia reaches a sensitivity of 0.79 and specificity of 0.91. These results indicate that the semaphore of anemia may be used as a screening method to reduce the number of blood tests and the time of evaluation from 15 minutes (rapid test with portable hemoglobinometer) to 1 minute.
