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the patient is lying down and the central ray is horizontal and parallel with the floor.
the centermost x-ray in the primary beam.
a specific patient body placement in regards to the radiographic table or IR during imaging
the path of the central ray as it exits the x-ray tube and through the patient to the IR.
the narrowing of the beam of radiation to only include the areas of interest
obstructive and destructive airway changes leading to an increased volume of air in the lungs
collapse of all or part of the lung
collection of fluid in the pleural cavity
accumulation of air in the pleural cavity resulting in collapse of the lung
acute infection of the lung parenchyma
blockage of bowel lumen
failure of bowel peristalsis
transfer of a cancerous lesion from one area to another
presence of air in the peritoneal cavity
new tissue growth where cell proliferation is uncontrolled
abdominal aortic aneurysm
localized dilation of abdominal aorta.