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Silicosis in stone carvers: correlation between HRCT and standard radiographs.

Authors
Antao-VC; Pinheiro-GA; Kavakama-J; Terra-Filho-M
Source
Am J Respir Crit Care Med 2004 Apr; 169(7)(Abstracts):A46
NIOSHTIC No.
20026045
Abstract
Rationale: A high prevalence of silicosis has been described among stone carvers in Brazil. This study was aimed to determine the correlation between two methods of radiological evaluation of silicosis in this population. Methods: Forty-one workers and 9 healthy controls were studied with chest radiographs (CR) and high resolution computed tomography (HRCT). The radiographs were independently interpreted by 3 "A" readers (according to ILO/1980 rules), and 3 radiologists experienced in the evaluation of pneumoconiosis read the HRCTs. All readers were blinded with respect to exposure. The results of each CR and HRCT examination was summarized as the median of 3 readings. A small opacity profusion of 1/0 or greater was considered as silicosis. A systematic protocol was used for grading silicosis on HRCT. Results: All CR and HRCT from the control group were considered normal. Silicosis was identified in 22/41 workers (53.7%) by CR, and in 23/41 workers (56.1%) by HRCT. The inter-reader agreement (generalized kappa) for major profusion categories (0, 1, 2, 3) was k=0.44 by CR and k=0.62 by HRCT (p
Keywords
Pulmonary-function; Humans; Lung-function; Pulmonary-system-disorders; Pulmonary-disorders; Respiratory-system-disorders; X-ray-analysis; X-ray-diagnosis; Radiographic-analysis; Radiography
CODEN
AJCMED
Publication Date
20040401
Document Type
Abstract; Conference/Symposia Proceedings
Email Address
vfc1@cdc.gov
Fiscal Year
2004
NTIS Accession No.
NTIS Price
Issue of Publication
7
ISSN
1073-449X
NIOSH Division
DRDS
Source Name
American Journal of Respiratory and Critical Care Medicine
State
WV
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