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Table 9 LCD subjective score

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

KVP/mAs LCD subjective score Mean p value
observer A observer B
80 KVP/50 mAs 3.0 (2.0,1.0) 3.0 (2.0,1.0) 1.50 ± 0.71 0.014*
80 KVP/100 mAs 3.0 (2.0,1.0) 3.0 (2.0,1.0) 1.50 ± 0.71 0.014*
80 KVP/150 mAs 4.0 (3.0,1.0) 4.0 (3.0,1.0) 2.00 ± 1.41 0.182
80 KVP/200 mAs 4.0 (3.0,1.0) 3.0 (2.0,1.0) 2.00 ± 1.41 0.182
80 KVP/250 mAs 5.0 (3.0,2.0) 5.0 (3.0,2.0) 2.50 ± 0.71 0.5
80 KVP/300 mAs 5.0 (3.0,2.0) 6.0 (3.0,3.0) 2.50 ± 0.71 0.5
80 KVP/380 mAs 6.0 (3.0,3.0) 6.0 (3.0,3.0) 3.0 ± 0.0 1
120 KVP/300 mAs 6.0 (3.0,3.0) 6.0 (3.0,3.0) 3.0 ± 0.0 (r)
  1. *Significant p < 0.05, (r) reference group, the p values are those obtained with 80 KVP Comparative with results acquired with 120 KVP/300 mAs. There is a good agreement among the two observers (A, B) regarding the personal evaluation of the LCD (κ = 0.667)