It is usually requested for the patients who are unable to sit or stand and it also demonstrate air-fluid levels in case of pathology, mediastinitis, pleural effusion, and pneumothorax
Lung apices, trachea, bronchus, mediastinum, costophrenic angle, ribs
Place a support with thickness of 5-10cm on filming table and place the patient on support in lateral decubitus position.
Place the cassette on front of patient’s chest and put arm around cassette
Size: 14’’x17’’ Orientation: Portrait / landscape
Central ray towards the center of the chest with height of 7th thoracic
Suspended with deep inspiration
Superiorly to above the shoulders, inferiorly to the 12th rib and laterally include skin margins