The PA (posterior-anterior) film is obtained with the patient facing the cassette and the x-ray tube 6 feet away. This distance diminishes the magnification of structures closer to the x-ray tube. Heart is close to normal size as possible.
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The term Cross Timbers, also known as Ecoregion 29, Central Oklahoma/Texas Plains, is used to describe a strip of land in the United States that runs from southeastern Kansas across Central Oklahoma to Central Texas.[1] Made up of a mix of prairie, savanna, and woodland,[2][3] it forms part of the boundary between the more heavily forested eastern ...