170quiz 4-1

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

localized dilation of abdominal aorta.