4 Respiratory System
LUNG FIELDS
Points to consider
Technique
PA – radiograph must be taken on full inspiration
PA – possible pneumothorax – radiograph taken on full expiration
Make sure the scapulae are clear of the lung fields
Radiological assessment
Poor inspiration may mimic cardiac enlargement
Small pneumothorax best seen on an expiration radiograph
Full inspiration – right 8–9 posterior ribs are just clear of the diaphragm
Haemoptysis – look for evidence of lung cancer or tuberculosis
Breathlessness – look for heart failure or collapse of lobes
PA
• Patient facing the cassette with chin extended
• Trunk is adjusted so that the median sagittal plane is perpendicular to the cassette
• Feet are parted to maintain stability
• Dorsal aspect of the hands are placed behind and below the hips and the elbows are brought forwards
• Shoulders are relaxed and rotated forwards until they are in contact with the cassette
• Instruct patient not to raise their shoulders as they breathe in
