1. Film Quality Assessment The Working Group The 2 nd Asian Workshop on Chest X- ray Reading of Pneumoconiosis (2 nd AIR – Pneumo Workshop) 24 – 25/7/2006 Bangkok Thailand)

2. 1. Review on ILO standard films Quality of the film is decided the radiograph reading result. Quality of the film is decided the radiograph reading result. Quality of the films are not the same (grade 1 and 2). Quality of the films are not the same (grade 1 and 2). For example: For example: Most are grade 2, Most are grade 2, Some are grade 1. Some are grade 1.

3. 2. Quality of Film depends on Quality of X-ray machine (High voltage and appropriate timing). Quality of X-ray machine (High voltage and appropriate timing). X-ray radiation soft or hard X-ray radiation soft or hard Technique when develop film Technique when develop film Posture of Posture of patient patient scapular shadow scapular shadow back bone shadow back bone shadow vascular pattern vascular pattern

4. 3. 4 grades of film quality Grade 1: Good for reading and classification Grade 1: Good for reading and classification Grade 2: Acceptable, but no technical defect to impair classification of the radiograph for pneumoconiosis Grade 2: Acceptable, but no technical defect to impair classification of the radiograph for pneumoconiosis Grade 3: Acceptable with some technical defect but still adequate for classification purpose Grade 3: Acceptable with some technical defect but still adequate for classification purpose Grade 4: Unacceptable for classification purpose Grade 4: Unacceptable for classification purpose

5. 4. Assess ILO standard films Review 2 0/0 ILO films: Concentrate into Review 2 0/0 ILO films: Concentrate into Posture of patient, scapular, back bone Posture of patient, scapular, back bone upper ribs, upper ribs, vascular pattern. vascular pattern. Example 1: Example 1: Grade 2. Grade 2. Example 2: Example 2: Grade 2. Grade 2.

6. 5. Groups review on film 009 JPSG Reading sheet delivered and filled Reading sheet delivered and filled Comment. Comment. Group presentation result. Group presentation result.

7. 6. Density measurement Using densitometer for recognizing quality of the films. Using densitometer for recognizing quality of the films. For examples. For examples.