The ILO International Classification of Radiographs of Pneumoconioses is a system of Since , the ILO has periodically published guidelines on how to classify chest X-rays for pneumoconiosis. The purpose of the Classification was to. ILO Classification The International Labour Organization (ILO) is a specialized agency of the Radiograph showing Simple Coal Workers’ Pneumoconiosis. The object of the classification is to codify the radiographic . defect likely to impair classification of the radiograph of pneumoconiosis. 3, Poor.

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The new text in chapter 6 identifies principles for viewing digitally acquired images of the chest and covers effective acquisition, display and storage of digital images. Note shrinkage in lower lung fields. The category of profusion is determined by considering the profusion as a whole over the affected zones of the lung and by comparing this with the standard radiographs. It deals with parenchymal abnormalities small and large opacitiespleural changes, and other features associated, or sometimes confused, with occupational lung disease.

Monday, 28 February This is because of its special importance in relation to pleural diffuse thickening.


The “B” reader certification examination [5] went into full operation in Note the left costophrenic angle obliteration. Some countries have established legal requirements for use of the Classification in the assessment of compensation claims, although the Classification was not originally designed for this purpose.

The size fot small round opacities is characterized as p up to 1. This page was last edited on 9 Septemberat In the continuing struggle ardiographs protect the health of workers occupationally exposed to airborne dusts, the ILO has for many years sought to improve the understanding of pneumoconiosis problems. Whether plaques are classified or not should be merely indicated by a symbol.


Since, it has been revised several times, the last time inalways with the objective of providing improved versions to be extensively used for clinical and epidemiological purposes.

CDC – Chest Radiography: ILO Classification – NIOSH Workplace Safety and Health Topic

The Guidelines for the use of the ILO International Classification of Radiographs of Pneumoconioses revised edition is the latest version of a well-established publication designed to standardize classification methods and facilitate international comparisons of pneumoconiosis statistics and research reports.

Retrieved from ” https: The description of standard radiographs is given in table 1. National Institute for Occupational Safety and Health. The object of the classification is to codify the radiographic abnormalities of pneumoconioses in a simple, reproducible manner. All plaques should be measured in centimetres. Final revisions to the latest edition were completed in ILO The 22 standard radiographs have been selected after international trials, in such a way as to illustrate the mid-categories standards of profusion of small opacities and to give examples of category A, B and C standards for large opacities.

The site and extent of pleural calcification are recorded separately for the two lungs, and the extent defined in terms of dimensions. The “Quad Set” consists of 14 radiographs, nine of the most commonly used standards from the Complete Set, plus five additional composite reproductions of quadrant sections from the other radiographs in the Complete Set. There are no features to be seen in a chest radiograph which are pathognomonic of dust exposure.

The scheme is designed for classifying the appearances of posterio-anterior chest radiographs. Pleural abnormalities are also assessed with respect to location, width, extent, and degree of calcification. Nevertheless, the classification has been found to have wider uses than anticipated.


ILO Classification – Wikipedia

Three sizes are defined by the appearances on standard radiographs: The pleural thickening present face on, is of indeterminate width, and extent 2. Sincethe International Labour Organization [1] has been a specialized agency of the United Nationswith objectives including establishing and overseeing international labor standards and labor rights.

The purpose of the Classification was to describe and codify radiographic abnormalities of the pneumoconioses in a simple, systematic, and reproducible manner, aiding international comparisons of data, epidemiology, screening and surveillance, clinical purposes, and medical research.

Extent of pleural thickening is defined in terms of the maximum length of pleural involvement, or as the sum of maximum lengths, whether seen in profile or face-on. Am J Radiol; Sincethe ILO has periodically published guidelines on how to classify chest X-rays for pneumoconiosis. Occupational Safety and Health Series No. A full description of the classification, including its applications and limitation is found in the publication ILO Each new version of the pnwumoconiosis promoted by the ILO has brought modifications and changes based on international experience gained in the use of earlier classifications.

See the Guidelines for the Use of the ILO International Classification of Radiographs of Pneumoconioses for a full description and exact definition of terms and entities. It is important to identify whether the costophrenic angle is visible or not.