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Table 1 Inclusion and exclusion criteria for deeming an image of sufficient quality for reading

From: Pretreatment chest x-ray severity and its relation to bacterial burden in smear positive pulmonary tuberculosis

Inclusion Exclusion
Postero-anterior film Artefacts obscuring the view of the lung fields
A full view of lung fields – the whole thorax with the first rib, lateral ribs and costophrenic angles in view Images acquired more than 4 weeks prior to pretreatment visit or more than 3 weeks after this
Adequate penetration of film to allow ribs and lung parenchyma to be distinguished