Table 4 Intra-center coefficient of variation (COV) of recovery coefficients (RCs) for each sphere size and activity concentration

4.49 (29.7–32.3)

40.2 (20.8–40.2)

59.4 (8.71–24.3)

67.6 (14.4–56.6)

108 (4.42–40.9)

7.58 (44.1–51.0)

47.1 (22.6–50.2)

39.7 (27.2–63.3)

32.9 (16.6–30.9)

45.3 (29.1–79.6)

12.4 (48.8–60.6)

9.79 (57.5–68.1)

13.4 (40.4–53.0)

34.5 (21.6–43.5)

49.6 (15.6–45.7)

5.06 (55.6–61.5)

8.35 (50.2–59.2)

18.2 (43.4–62.0)

36.8 (27.8–57.7)

50.8 (14.5–47.1)

6.48 (56.2–63.7)

6.69 (49.9–57.0)

4.89 (58.9–64.3)

23.9 (34.9–56.9)

35.0 (27.2–57.4)

1.43 (77.0–79.0)

4.79 (70.1–77.1)

7.52 (66.6–77.0)

16.0 (56.6–77.4)

20.0 (53.9–77.7)