PneumoniaPneumonia (noo-mon′-ya) (pneumonitis) is an inflammation ofthe lungs that results in accumulation of fluid within certain sectionsof the lungs, creating increased radiodensities in these regions.The most common initial diagnostic examination consists of PA andlateral erect horizontal beam radiographs. Types of pneumonia arederived from the location and cause of the inflammation. Normalexposure factors generally are used initially. The radiologist mayrequest secondary images with increased density (brightness) tosee through the area of interest to rule out a lesion in the sameanatomic region when film-screen imaging methods are beingemployed. The different types of pneumonia include the following.
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