Skip to main content

Table 3 Pooled image quality assessment three radiologists. Results are displayed as absolute frequencies and percentages in parentheses. Median values are provided with interquartile ranges

From: Influence of spectral shaping and tube voltage modulation in ultralow-dose computed tomography of the abdomen

Tube voltage

Sn 100 kVp

Sn 150 kVp

120 kVp

100 kVp

80 kVp

Dose level

Standard

Low

Ultralow

Standard

Low

Ultralow

Standard

Low

Ultralow

Standard

Low

Ultralow

Standard

Low

Ultralow

7

13 (54.2)

0 (0)

0 (0)

9 (37.5)

0 (0)

0 (0)

6 (25.0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

6

11 (45.8)

0 (0)

0 (0)

15 (62.5)

0 (0)

0 (0)

18 (75.0)

0 (0)

0 (0)

21 (87.5)

0 (0)

0 (0)

18 (75.0)

0 (0)

0 (0)

5

0 (0)

20 (83.3)

0 (0)

0 (0)

18 (75.0)

0 (0)

0 (0)

17 (70.8)

0 (0)

3 (12.5)

14 (58.3)

0 (0)

6 (25.0)

9 (37.5)

0 (0)

4

0 (0)

4 (16.7)

5 (20.8)

0 (0)

6 (25.0)

0 (0)

0 (0)

7 (29.2)

0 (0)

0 (0)

10 (41.7)

0 (0)

0 (0)

15 (62.5)

0 (0)

3

0 (0)

0 (0)

19 (79.2)

0 (0)

0 (0)

15 (62.5)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

2

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

9 (37.5)

0 (0)

0 (0)

20 (83.3)

0 (0)

0 (0)

7 (29.2)

0 (0)

0 (0)

6 (25.0)

1

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

0 (0)

4 (16.7)

0 (0)

0 (0)

17 (70.8)

0 (0)

0 (0)

18 (75.0)

Median (IQR)

7 (6–7)

5 (5–5)

3 (3–3)

6 (6–7)

5 (5–5)

3 (2–3)

6 (6–6)

5 (4–5)

2 (2–2)

6 (6–6)

5 (4–5)

1 (1–2)

6 (6–6)

4 (4–5)

1 (1–1)

  1. Note.– IQR– interquartile range