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New composite ('quadrant') standard films for classifying radiographs of pneumoconiosis.

Authors
Jacobson-M; Miller-WE; Parker-JE
Source
Ind Health 1998 Oct; 36(4):380-383
NIOSHTIC No.
20000171
Abstract
120 chest radiographs of dust exposed persons were classified twice by each of 39 physicians, and three times by 37 of them. All film readers use both the 22 standard films accompanying the current International Labour Office's (1980) Classification of Radiographs of Pneumoconiosis, and a modified set that reproduced selected parts from some of them as quadrants of full-size films. Variability within and between readers in small opacity profusion classifications was high, but similar when using the two sets of standards. Some readers recognized irregularly shaped small opacities more frequently higher on the scale when using the current standards. The effects found were small although the test films included a high proportion with some small opacities. It is concluded that use of the new quadrant standards is unlikely to introduce any important bias into results from occupational health surveys.
Keywords
Pulmonary-system-disorders; Pneumoconiosis; X-ray-diagnosis; Diagnostic-techniques; Diagnostic-tests; Radiographic-analysis; Radiography; Dust-exposure; Occupational-health; Author Keywords: ILO; International; Classification; Chest radiograph; Pneumoconiosis
Contact
Michael Jacobsen, National Institute for Occupational Safety and Health, Morgantown WV 26505, USA
CODEN
INHEAO
Publication Date
19981001
Document Type
Journal Article
Fiscal Year
1999
NTIS Accession No.
NTIS Price
Issue of Publication
4
ISSN
0019-8366
NIOSH Division
DRDS
Source Name
Industrial Health
State
WV
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