Table 5 Comparison of the misdiagnosis ratio of each reader while evaluating the standard image with and without the soft tissue image.

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

Overlapped with bone (n = 131)

Not overlapped with bone (n = 24)

Standard image alone

Standard and soft tissue images

P value

Standard image alone

Standard and soft tissue images

P value

26 (reader 1)

11.5% (15/131)

7.6% (10/131)

0.096

4.2% (1/24)

8.3% (2/24)

0.317

14 (reader 2)

17.6% (23/131)

12.2% (16/131)

0.144

12.5% (3/24)

12.5% (3/24)

1.000

8 (reader 3)

21.4% (28/131)

7.6% (10/131)

 < 0.001

16.6% (4/24)

8.3% (2/24)

0.157

6 (reader 4)

22.1% (29/131)

14.5% (19/131)

0.050

25.0% (6/24)

4.2% (1/24)

0.025

3 (reader 5)

35.9% (47/131)

16.0% (21/131)

 < 0.001

41.7% (10/24)

20.8% (5/24)

0.059

  1. The misdiagnosis ratio (false positive plus false negative ratios) decreased after adding soft tissue images, especially for nodules overlapped with bone. P value denotes statistically significant differences in accuracy.