An algorithm for the detection of small rounded pneumoconiosis opacities in chest x-rays and its application to automatic diagnosis.

Details

• Personal Author:
  Kobatake H ; Watanabe T
• Description:
  A new method was presented to identify small rounded opacities of pneumoconiosis and to classify the grade of their density. The new method was based on the processing of local density patterns. The method was used in the processing of 11 International Labor Office 1980 standard films whose opacity shapes were rounded. Pneumoconiosis opacities identified by an expert reader and those detected by the proposed method were compared. The number of pneumoconiosis opacities identified by an expert reader and that detected by the proposed method were 120 and 109, respectively. Among them, 66 opacities coincided with each other. The proposed method was not sensitive to the changes of film quality, which was superior to texture analytic approaches. The correct classification rate by the proposed method was demonstrated to be comparable to them. However, many false opacities were detected as pneumoconiosis opacities; therefore, the authors conclude that further improvement of the method is needed.
• Subjects:
  Accidents, Occupational Chemistry Environmental Exposure Environmental Monitoring Environmental Pollution Hematologic Tests Occupational Health Safety Urine Workplace
• Keywords:
  Clinical Diagnosis Diagnostic Techniques Lung Disease Pulmonary Disorders Radiographic Analysis X Ray Analysis X Ray Diagnosis
• Publisher:
  National Institute for Occupational Safety and Health
• Document Type:
  Text
• Genre:
  Conference/Symposia Proceedings
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  492-494
• NIOSHTIC Number:
  nn:00198449
• Citation:
  Proceedings of the VIIth International Pneumoconioses Conference, August 23-26, 1988, Pittsburgh, Pennsylvania, USA. Atlanta, GA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 90-108, 1990 Sep; (Part I):492-494
• Federal Fiscal Year:
  1990
• Peer Reviewed:
  False
• Part Number:
  I
• Source Full Name:
  Proceedings of the VIIth International Pneumoconioses Conference, August 23-26, 1988, Pittsburgh, Pennsylvania, USA
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:bfdc447b17e0112f7922916415f14970bb7d0502cb7042e33fe35991e0029e9e7736d9eb2f9e4b1e0926513049179f283a0415cdac370718497cc109264f7d95
• Download URL:
  https://stacks.cdc.gov/view/cdc/180512/cdc_180512_DS1.pdf
• File Type:
  [PDF - 136.93 KB ]