Texture Analysis of Opacity Profusion in Chest Radiographs of Miners with Pneumoconiosis

Details

• Personal Author:
  James D ; Ketai L ; Pattichis C ; Pattichis M ; Soliz P
• Description:
  Individuals who have been exposed through their occupations to high levels of dust, asbestos, or other particulates are at risk for interstitial lung diseases such as pneumoconiosis. These individuals must have periodic examinations including chest radiographs to monitor for signs of the opacities associated with pneumoconiosis. The International Labor Organization (ILO) has established a protocol to score the degree of profusion, size, and shape of opacities. This research assessed texture analysis techniques for quantitatively characterizing the nature of the opacities as presented through ribs and parenchyma. Radiographs were of coal-mine or silica dust exposed miners participating in a health screening program. A total of 252 regions of interest (ROls) (166, 49, 21, 16 and 9 with profusions of category (shape and size) 0, l(q), I(r), 2(q) and 2(r) respectively) were identified from 80 digitized chest radiographs by two B-readers. Fifty-eight different texture features were computed. The non-parametric Wilcoxon rank sum test was carried out to compare the different profusion categories versus that of profusion O. Results showed that significant differences exist (at a=0.05) between 0 vs I(q), 0 vs I(r), 0 vs 2(q) and 0 vs 2(r) for 44, 17,46 and 6 features respectively. For each group, the median and the spread of the data {difference between the 75th and 25th percentile} for a few features are given. [Description provided by NIOSH]
• Subjects:
  Asbestos Coal Coal Mining Dust Mining Occupational Health Particulate Matter Radiation Radiography Respiratory Tract Diseases Safety

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• Keywords:
  Asbestos-dust Coal-miners Coal-mining Dust-particles Dusts Mine-workers Particulate-dust Pneumoconiosis Pulmonary-system-disorders Radiographic-analysis Respiratory-system-disorders Screening-programs Underground-miners

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• ISSN:
  1073-449X
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Abstract or Summary ; Proceedings
• Place as Subject:
  New Mexico ; OSHA Region 6
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  165
• Issue:
  8
• NIOSHTIC Number:
  nn:20022995
• Citation:
  Am J Respir Crit Care Med 2002 Apr; 165(8)(Suppl):A529
• Federal Fiscal Year:
  2002
• NORA Priority Area:
  Pulmonary System Disorders ; Other Occupational Concerns
• Performing Organization:
  Kestrel Corporation, Albuquerque, New Mexico
• Peer Reviewed:
  False
• Start Date:
  19983009
• Source Full Name:
  American Journal of Respiratory and Critical Care Medicine, 2002 International Conference, The American Thoracic Society, Atlanta Georgia, May 17-22, 2002
• Supplement:
  Suppl
• End Date:
  19993103
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:db63ac23b54071feafe61717fe10ba59a35b38430b3644250b84a37fd15b10f4682aef1c921469fa12c90b8c021b2c7d58e226a0048a04ed264fc9542fb98d92
• Download URL:
  https://stacks.cdc.gov/view/cdc/199591/cdc_199591_DS1.pdf
• File Type:
  [PDF - 262.24 KB ]