Search

Your search keyword '"Ronald Barrientos"' showing total 2 results
Start Over Author "Ronald Barrientos" Publisher public library of science (plos)
2 results on '"Ronald Barrientos"'

1. Automatic classification of pediatric pneumonia based on lung ultrasound pattern recognition.

Author

Malena Correa, Mirko Zimic, Franklin Barrientos, Ronald Barrientos, Avid Román-Gonzalez, Mónica J Pajuelo, Cynthia Anticona, Holger Mayta, Alicia Alva, Leonardo Solis-Vasquez, Dante Anibal Figueroa, Miguel A Chavez, Roberto Lavarello, Benjamín Castañeda, Valerie A Paz-Soldán, William Checkley, Robert H Gilman, and Richard Oberhelman

Subjects
Medicine, Science
Abstract

Pneumonia is one of the major causes of child mortality, yet with a timely diagnosis, it is usually curable with antibiotic therapy. In many developing regions, diagnosing pneumonia remains a challenge, due to shortages of medical resources. Lung ultrasound has proved to be a useful tool to detect lung consolidation as evidence of pneumonia. However, diagnosis of pneumonia by ultrasound has limitations: it is operator-dependent, and it needs to be carried out and interpreted by trained personnel. Pattern recognition and image analysis is a potential tool to enable automatic diagnosis of pneumonia consolidation without requiring an expert analyst. This paper presents a method for automatic classification of pneumonia using ultrasound imaging of the lungs and pattern recognition. The approach presented here is based on the analysis of brightness distribution patterns present in rectangular segments (here called "characteristic vectors") from the ultrasound digital images. In a first step we identified and eliminated the skin and subcutaneous tissue (fat and muscle) in lung ultrasound frames, and the "characteristic vectors"were analyzed using standard neural networks using artificial intelligence methods. We analyzed 60 lung ultrasound frames corresponding to 21 children under age 5 years (15 children with confirmed pneumonia by clinical examination and X-rays, and 6 children with no pulmonary disease) from a hospital based population in Lima, Peru. Lung ultrasound images were obtained using an Ultrasonix ultrasound device. A total of 1450 positive (pneumonia) and 1605 negative (normal lung) vectors were analyzed with standard neural networks, and used to create an algorithm to differentiate lung infiltrates from healthy lung. A neural network was trained using the algorithm and it was able to correctly identify pneumonia infiltrates, with 90.9% sensitivity and 100% specificity. This approach may be used to develop operator-independent computer algorithms for pneumonia diagnosis using ultrasound in young children.

Published
2018
Full Text
View/download PDF

2. Automatic classification of pediatric pneumonia based on lung ultrasound pattern recognition

Author

Cynthia Anticona, Valerie A. Paz-Soldan, Franklin Barrientos, Benjamin Castaneda, Richard A. Oberhelman, Alicia Alva, Holger Mayta, Ronald Barrientos, Malena Correa, Roberto Lavarello, Miguel A. Chavez, Dante Figueroa, Robert H. Gilman, William Checkley, Avid Roman-Gonzalez, Monica J. Pajuelo, Leonardo Solis-Vasquez, and Mirko Zimic

Subjects
Male, Pulmonology, preschool child, Diagnostic Radiology, 030218 nuclear medicine & medical imaging, 0302 clinical medicine, Ultrasound Imaging, Peru, Medicine and Health Sciences, Image Processing, Computer-Assisted, 030212 general & internal medicine, Child, Musculoskeletal System, Lung, Ultrasonography, thorax radiography, education.field_of_study, child, clinical article, Multidisciplinary, medicine.diagnostic_test, Radiology and Imaging, Applied Mathematics, Simulation and Modeling, Ultrasound, Thorax, Pulmonary Imaging, 3. Good health, medicine.anatomical_structure, female, classification, Child, Preschool, Physical Sciences, Pattern recognition (psychology), Pleurae, Medicine, Anatomy, Algorithms, Research Article, Computer and Information Sciences, Soft Tissues, Imaging Techniques, diagnostic imaging, Science, Population, digital imaging, disease classification, Ribs, Physical examination, Research and Analysis Methods, Article, lung infiltrate, lung, 03 medical and health sciences, male, Diagnostic Medicine, Artificial Intelligence, image analysis, medicine, Humans, pneumonia, controlled study, procedures, human, education, Artificial Neural Networks, Skeleton, automation, purl.org/pe-repo/ocde/ford#3.02.03 [https], Computational Neuroscience, business.industry, Biology and Life Sciences, Computational Biology, Infant, echography, Pattern recognition, Pneumonia, Neural Networks (Computer), medicine.disease, infant, Lung ultrasound, image processing, respiratory tract diseases, Biological Tissue, sensitivity and specificity, purl.org/pe-repo/ocde/ford#3.02.07 [https], Neural Networks, Computer, Artificial intelligence, business, Mathematics, Classification of pneumonia, artificial neural network, Neuroscience
Abstract

Pneumonia is one of the major causes of child mortality, yet with a timely diagnosis, it is usually curable with antibiotic therapy. In many developing regions, diagnosing pneumonia remains a challenge, due to shortages of medical resources. Lung ultrasound has proved to be a useful tool to detect lung consolidation as evidence of pneumonia. However, diagnosis of pneumonia by ultrasound has limitations: it is operator-dependent, and it needs to be carried out and interpreted by trained personnel. Pattern recognition and image analysis is a potential tool to enable automatic diagnosis of pneumonia consolidation without requiring an expert analyst. This paper presents a method for automatic classification of pneumonia using ultrasound imaging of the lungs and pattern recognition. The approach presented here is based on the analysis of brightness distribution patterns present in rectangular segments (here called "characteristic vectors") from the ultrasound digital images. In a first step we identified and eliminated the skin and subcutaneous tissue (fat and muscle) in lung ultrasound frames, and the "characteristic vectors"were analyzed using standard neural networks using artificial intelligence methods. We analyzed 60 lung ultrasound frames corresponding to 21 children under age 5 years (15 children with confirmed pneumonia by clinical examination and X-rays, and 6 children with no pulmonary disease) from a hospital based population in Lima, Peru. Lung ultrasound images were obtained using an Ultrasonix ultrasound device. A total of 1450 positive (pneumonia) and 1605 negative (normal lung) vectors were analyzed with standard neural networks, and used to create an algorithm to differentiate lung infiltrates from healthy lung. A neural network was trained using the algorithm and it was able to correctly identify pneumonia infiltrates, with 90.9% sensitivity and 100% specificity. This approach may be used to develop operator-independent computer algorithms for pneumonia diagnosis using ultrasound in young children.

Published
2018

Catalog

Books, media, physical & digital resources
See catalog results