Tools To Improve Radiographic Quality

The following are the important tools to be considered and observed to improve radiographic quality so as yo yield a high quality radiograph, thus resulting to decrease repeat exposures leading to less patient dose: Patient Position Good knowledge of human anatomy Central axis/Central Ray Proper patient instruction Distance...
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Brief History of Ultrasound

Lazzaro Spallanzani In 1794 he experimented with bats and found that they maneuvered through the air using their hearing rather than sight, which forms the basis for ultrasound physics. Jean-Daniel Colladon Swiss physicist/engineer discovered sonography with an underwater bell in 1826. He accurately determined the speed of sound...
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