Comparison of the International Classification of High-resolution Computed
Tomography for occupational and environmental respiratory diseases with the International
Labor Organization International Classification of Radiographs of
Pneumoconiosis

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Abstract

The International Classification of High-resolution Computed Tomography for Occupational and Environmental Respiratory Diseases (ICOERD) has been developed for screening and diagnosis of occupational lung diseases. We evaluated the association of icoerd with the International Labor Organization (ILO) classification and respiratory functions in pneumoconiosis. Chest x-rays of patients with pneumoconiosis were classified with ilo and icoerd using hrct, irregular opacity, pleural pathology, and emphysema was detected in 78, 19, and 53 patients, and using chest x-rays in 47, 4, and 14 patients, respectively. There was a significant correlation between ILO categories and ICOERD grades. There was a negative correlation between ILO categories and FEV1% and FVC%, whereas, ICOERD grades were not correlated with FEV1% and FVC%. HRCT was superior to chest x-rays to detect pneumoconiosis in early stage, but not in evaluating pulmonary functions.

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Most cited references 28

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Reliability of the proposed international classification of high-resolution computed tomography for occupational and environmental respiratory diseases.

Narufumi Suganuma, Yukinori Kusaka, Kurt G Hering … (2009)

We have developed a classification of high-resolution computed tomography (HRCT) images for screening, surveillance and epidemiological studies of respiratory diseases caused by occupational and environmental factors. The proposed classification consists of three parts: a guideline explaining the elements of the classification scheme, a reading sheet, and reference films to aid in assessing thin-section CT films. We assessed the reliability of the proposed classification system by blinded, independent trial reading.

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An epidemic of silicosis among former denim sandblasters.

M. Akgün, O Araz, I Akkurt … (2008)

Sandblasting denim using silica has emerged as a new cause of silicosis in Turkey. Following the discovery of several cases of silicosis in (young) workers who used this process, the frequency and main occupational risk factors of silicosis among former denim sandblasters in the region of Erzurum (Turkey) were evaluated. Demographic characteristics and information on working conditions were obtained by questionnaire and interview. In addition, spirometry testing was performed and chest radiographs were evaluated according to International Labour Office (ILO) classification of pneumoconioses in 157 former denim sandblasters. All subjects were male, with a mean (range) age of 23 (15-44) yrs. They had worked for a mean (range) of 36 (1-120) months, starting employment at a 17 (10-38) yrs of age. Most subjects (83%) had respiratory symptoms, especially dyspnoea (52%) but also chest pain (46%). Radiological evidence of silicosis (ILO score 1/0 or higher) was present in 77 (53%) out of 145 subjects with interpretable chest radiographs. These subjects had lower forced expiratory volume in one second and forced vital capacity. The risk of silicosis correlated with seniority (i.e. working as a foreman), exposure duration and number of places of work. Considering the high prevalence rate of silicosis in such workplaces, further problems are inevitable in the future unless effective measures are taken.

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Computed tomography scan in the early detection of silicosis.

N Colman, G Ostiguy, R Fillion … (1991)

We evaluated the ability of both the conventional and high resolution computed tomography (CCT and HRCT, respectively) scans of the thorax to detect early silicosis in subjects exposed to silica dust in the mines and foundries of Québec for an average of 29 +/- 2 yr. The study was limited to subjects with chest radiograph (CR) of the International Labor Organization (ILO) Categories 0 or 1 as determined independently a priori. All subjects had a standard high-kilovoltage posteroanterior and lateral CR, a set of 10 to 15 1 cm collimation CCT scans, and a set of three to five 2 mm collimation HRCT scans in the upper, middle, and lower lung fields. For each CR and sets of CT scans, readings were done independently by four experienced readers. For small opacities of the lung parenchyma on CR, 32 of the 51 subjects were normal (Group A), six were indeterminate (Group B), and 13 were abnormal (Group C). By the combined readings of HRCT and CCT, 13 of the subjects (40%) in Group A were abnormal (p less than 0.001); four of the subjects in Group B were abnormal, and in Group C, one subject was normal, one indeterminate, and 11 (84%) abnormal. For confluence of small opacities, 48 of the 51 subjects were negative (Group 0), and three were positive (Group 1) on the CR. By the CT scan, 42 of the 48 subjects in Group 0 were negative, and the three subjects in Group 1 were positive; thus the CT scan added six positive cases with confluence of small opacities (six of 48, 12.5%).(ABSTRACT TRUNCATED AT 250 WORDS)

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Author and article information

Journal

Journal ID (nlm-ta): Ind Health

Journal ID (iso-abbrev): Ind Health

Journal ID (publisher-id): INDHEALTH

Title: Industrial Health

Publisher: National Institute of Occupational Safety and Health, Japan

ISSN (Print): 0019-8366

ISSN (Electronic): 1880-8026

Publication date (Electronic): 19 October 2018

Publication date (Print): July 2019

Volume: 57

Issue: 4

Pages: 495-502

Affiliations

[1 ]Department of Chest Disease, Ankara Atatürk Chest Diseases and Chest Surgery Education and Research Hospital, Turkey

[2 ]Department of Radiology, Ankara Atatürk Chest Diseases and Chest Surgery Education and Research Hospital, Turkey

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*To whom correspondence should be addressed. E-mail: melahatuzeldr@ 123456yahoo.com.tr

Article

Publisher ID: 2018-0068

DOI: 10.2486/indhealth.2018-0068

PMC ID: 6685792

PubMed ID: 30344228

SO-VID: df702bbe-a279-42e7-9128-93bb7529ee74

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This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives (by-nc-nd) License. (CC-BY-NC-ND 4.0: https://creativecommons.org/licenses/by-nc-nd/4.0/ )

Comparison of the International Classification of High-resolution Computed Tomography for occupational and environmental respiratory diseases with the International Labor Organization International Classification of Radiographs of Pneumoconiosis

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Most cited references 28

Reliability of the proposed international classification of high-resolution computed tomography for occupational and environmental respiratory diseases.

An epidemic of silicosis among former denim sandblasters.

Computed tomography scan in the early detection of silicosis.

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