Effects of tube voltage, filtration, and dose rate on the color difference of the indicator. Effects of tube voltage, filtration, and dose rate on the.

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Presentation transcript:

Effects of tube voltage, filtration, and dose rate on the color difference of the indicator. Effects of tube voltage, filtration, and dose rate on the color difference of the indicator. A, Indicators were irradiated at the dose of 1 Gy by using 4 tube voltages (50, 75, 100, and 125 kV) and 4 types of filtration (2.2 mm of aluminum, 5.2 mm of aluminum, 3.7 mm of aluminum + 0.1 mm of copper; and 3.7 mm of aluminum + 0.4 mm of copper) with a 20-mA tube current. The difference in the color difference was within 2.20. B, The effect of the dose rate was also evaluated by using 2 tube currents (5 and 20 mA) for the 4 types of filtration at the dose of 1 Gy with tube voltage of 75 kVp. For each filtration, the difference in the color between the 2 dose rates was within 0.79. Al indicates aluminum; Cu, copper. S. Suzuki et al. AJNR Am J Neuroradiol 2008;29:1076-1081 ©2008 by American Society of Neuroradiology