Table 2 Diagnostic accuracy in the detection of skeletal muscle metastases in conventional images (CI), iodine overlay images (IDO) and virtual monoenergetic images at 40 keV (VMI_40keV)

1

35.2 (26.2–45.0) / 75.0 (53.3–90.2)

56.5 (46.6–66) / 84.2 (60.4–96.6)

48.1 (38.4–58.0) / 63.6 (40.7–82.8)

2

57.4 (47.5–66.9) / 59.1 (43.4–73.7)

73.1 (63.8–81.2) / 78.8 (67.0–87.9)

64.8 / (55.0–73.8) 74.7 (65.0–82.9)

3

46.3 (36.7–56.2) / 61.8 (43.6–77.8)

65.7 (56.0–74.6) / 60.3 (47.2–72.4)

65.7 (56.0–74.6) / 60.7 (46.8–73.5)

4

20.4 (13.2–29.2) / 87.1 (70.2–96.4)

57.4 (47.5–66.9) / 73.9 (58.9–85.7)

38.9 (29.7–48.8) / 73.7 (56.9–86.6)

OVERALL

39.8 (35.2–44.6) / 69.2 (60.6–76.9)

63.2 (58.5–67.8) / 74.2 (65.3–78.4)

54.4 (49.6–59.2) / 69.8 (63.2–75.8)

Cohen’s Kappa

κ = 0.62

κ = 0.76

κ = 0.44