One form of such quality control test is a test of precision voltage spending tubes (kVp). Test the accuracy of expenditure voltage tubes (kVp) is a test to find out the number of the output voltage of the tube set in the control panel. The output voltage of the tube of the x-ray tube has a very influential effect on the contrast of the image, the density of optical radiation doses, and in patients received (Papp, 2011). Any inconsistent radiation output can affect the quality of radiograph, Kilovolt Peak (kVp), miliAmpere (mA), second (s) must be in accordance with the Setup in the control panel (Papp, 2006). The number of large or x-rays generated by a plane x-ray was strongly influenced by the values of voltage (kVp) tubes that are set on the control panel. Tube voltage (kVp) effect on x-ray output and is a major factor that affects the x-ray translucent power coming out (Bushong, 2001).
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