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International Labour Office - Geneva

Teaching File:Fecit: Kurt G. Hering M.D., Knappschaftskrankenhaus

Dortmund, Germany06/2003

International Labour Office Geneva: for teaching purposes only

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I L OInternational Labour Organization

1919 Foundation (Vlkerbund) 1946 Reorganisation with UNO

Institutions:

International Conference International Board

Intern. Labour. Office - ILO

KGH

ILO - Classification 2000

Film Quality Small Opacities (Shape and Size):

- rounded- linear/irregular- mixed

Large Opacities Pleural Abnormalities

- Plaques - costophrenic angle

- diffuse pleural thickening- calcification

Symbols

Technique

High kV

Grid Exposure time short Distance 180 cm

Film-Screen-Combination

Technique

Central Beam exact Positioning of Patient exact

Focus-Film-Distance constant Exposure High kV

Dosis in Film-Plain < 5 Gy Exposure-time - p.a. < 20 msec

- lat. < 40 msec

ILO-Classification 2000

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ILOILO--ClassificationClassification of of PneumoconiosesPneumoconioses

TechnicalTechnical QualityQuality

Equipment and

Technique:

Physicians and

Radiographers should

take cognizance

of national and local

regulations

The standard radiographs are not to be considered in determining technical quality

of the subject radiographs. The standard radiographs were chosen to demonstratefeatures of the pneumoconioses, rather than to demonstrate technical quality.

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ILOILO--ClassificationClassification of of PneumoconiosesPneumoconioses

TechnicalTechnical QualityQuality

The standard radiographs are not to be considered in determining technical quality

of the subject radiographs. The standard radiographs were chosen to demonstratefeatures of the pneumoconioses, rather than to demonstrate technical quality.

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ILOILO--ClassificationClassification of of PneumoconiosesPneumoconioses: : ProfusionProfusion

0/02/2 3/3 1/1

Increasing profusion of small opacities

Categories 0 1 2 3

Sub-categories 0/- 0/0 0/1 1/0 1/1 1/2 2/1 2/2 2/3 3/2 3/3 3/+

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ILOILO--ClassificationClassification of of PneumoconiosesPneumoconioses

Affected Zones

Small

Opacities

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ILOILO--ClassificationClassification of of PneumoconiosesPneumoconioses

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International Labour Office - Geneva

ILO-Classification: Standard Radiographs

Profusion 3/+ 3/3 3/2 2/3

2/2 2/1 1/2 1/1 1/0 0/1 0/0

0/-

0 1 2 3 Standard Radiograph

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Classification with Standard Radiographs

1. Patients Film identical with Standardfilm = Main Category

2. Patients Film similar to the Standardfilm,

but lower category seriously considered:

= primo loco-main category; secundo loco-lower sub-category

3. Patients Film similar to the Standardfilm,

but higher category seriously considered:

= primo loco-main category; secundo loco-higher sub-category

ILO-Standard

Pneumoconiosis with

rounded and/or

irregular Opacities

Lower Sub-category

Chest-X-Ray:

Patient to classify

Pneumoconiosis ?

Profusion ?

Main Category

ILO-Standard

Pneumoconiosis with

rounded and/or

irregular Opacities

Higher Sub-category

Compare Patients with Standards Radiograph:

Viewing

Box

2/22/1 2/3

Schau=

kasten

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Example 1:

1/1 1/2 2/1 2/2

ILOILO--ClassificationClassification of of PneumoconiosesPneumoconioses: : mixedmixed shapeshape, , sizesize and and

profusionprofusion

Overall profusion of all small opacities of all affected zones is determined!

Attention! --marked (three subcategories ore more) difference between

the zone of lowest and zone of highest profusion

One intervening sub-category (2/1),

use all three to determine overall profusion

Two intervening sub-categories (1/2 and 2/1),

ignore 1/1 to determine overall profusion

Example 2:

1/1 1/2 2/1 2/2 2/3

One intervening sub-category (2/2),

use all three to determine overall profusion

Three intervening sub-categories (1/2, 2/1 and 2/2),

ignore 1/1 and 1/2 to determine overall profusion

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ILO q/q 1/1

3 different views of the same candidate, classified as q/q 1/1

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ILO q/q 2/2, different enlargements

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ILO q/q 3/3; different window settings

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ILOILO--ClassificationClassification of of PneumoconiosesPneumoconioses

Large Opacities:

A = longest dimension of one > 1cm or several with sum < 5 cm

B = longest dimension of one > 5 cm, one or sum < right upper zone (RUZ)

C = one or several exceeding equivalent area of RUZ (Right Upper Zone)

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ILOILO--ClassificationClassificationof of PneumoconiosesPneumoconioses: ILO 80 A: ILO 80 A

International Labour Office Geneva: for teaching purposes only

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2003International Labour Office Geneva: for teaching purposes only

Large Opacities: B

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Large Opacities: C

Symbol: es =eggshell