Table 2 Noise and CNR at different dose levels with FBP, HIR and MIR

37.5 (28.1–42.8)

30.2 (25.4–52.0)

4.8 (3.0–5.5)

18.4 (15.0–22.2)^a

18.2 (14.6–23.3)^a

8.3 (6.7–10.1)^a

11.4 (9.5–12.5)^a

11.5 (9.8–15.2)^a

13.0 (10.7–15.9)^a

46.6 (38.9–58.4)^a

39.3 (31.6–78.9)^a

3.3 (2.1–4.5)^a

23.2 (20.5–26.5)^a

23.5 (17.5–27.8)^a

6.7 (5.5–8.1)^a

12.3 (11.3–14.4)^a

13.5 (10.7–17.2)^a

11.4 (9.0–13.7)^a

60.2 (47.8–81.4)^a

50.8 (42.5–94.6)^a

2.5 (1.7–3.5)^a

26.4 (22.9–31.8)^a

28.1 (21.4–34.7)^a

5.5 (4.4–6.8)^a

13.7 (12.2–16.5)^a

13.9 (12.7–17.2)^a

11.4 (8.9–12.4)^a

80.0 (61.4–108.5)^a

62.8 (47.5–142.6)^a

2.3 (1.2–2.7)^a

32.6 (28.5–37.8)

30.4 (24.7–39.6)

4.7 (3.7–5.7)

16.4 (14.1–19.7)^a

15.1 (13.8–19.1)^a

9.2 (7.9–11.3)^a