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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A crossword is a word puzzle that normally takes the form of a square or a rectangular grid of white and black shaded squares.The goal is to fill the white squares with letters, forming words or phrases, by solving clues which lead to the answers.xample of a Barred Crossword (also known as a Barred Grid Crossword) grid where bold bars are used instead of shaded blocks to denote separation between words. Crossword grids such as those appearing in most North American newspapers and magazines feature solid areas of white squares.