Table 4 Comparison of the accuracy in nodule diameter < 10 mm and 10 mm ≤ while evaluating the standard image alone vs. the standard and the soft tissue images.

From: Effectiveness of one-shot dual-energy subtraction chest radiography with flat-panel detector in distinguishing between calcified and non-calcified nodules

Years of experience

Nodule diameter < 10 mm (n = 64)

Nodule diameter ≥ 10 mm (n = 91)

Standard image alone

Standard and soft tissue images

P value

Standard image alone

Standard and soft tissue images

P value

26 (reader 1)

89.1% (57/64)

90.6% (58/64)

0.655

90.1% (82/91)

93.4% (85/91)

0.180

14 (reader 2)

79.7% (51/64)

81.3% (52/64)

0.796

85.7% (78/91)

92.3% (84/91)

0.083

8 (reader 3)

78.1% (50/64)

87.5% (56/64)

0.058

80.2% (73/91)

95.6% (87/91)

 < 0.001

6 (reader 4)

68.8% (44/64)

81.3% (52/64)

0.059

83.5% (76/91)

91.2% (83/91)

0.052

3 (reader 5)

62.5% (40/64)

76.6% (49/64)

0.029

63.7% (58/91)

87.9% (80/91)

 < 0.001

  1. P value denotes statistically significant differences in accuracy.