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Table 5 Comparison of CNR between 120 and 80 KVP

From: Studies on the radiation dose, image quality and low contrast detectability from MSCT abdomen by using low tube voltage

  CNR Student t-test p value
120 KVP 80 KVP
Mean ± SD 0.94 ± 0.27 0.43 ± 0.22 3.73 0.003*
Min–Max 0.51–1.24 0.02–0.63
  1. *means p < 0.05