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Figure 2: Chest radiographs on the same patient a few minutes apart showing the effect of technique; the left image shows mediastinal widening and basal clouding due to a poor inspiratory effort; the right image has been taken in good inspiration and looks entirely normal

Figure 2: Chest radiographs on the same patient a few minutes apart showing the effect of technique; the left image shows mediastinal widening and basal clouding due to a poor inspiratory effort; the right image has been taken in good inspiration and looks entirely normal