Table 2.

¹²³I-MIBG scintigraphy results

MIBG scintigraphy	Total group (n = 49)	Patient subgroup
		Ischaemic HF (n = 25)	Non-ischaemic HF (n = 24)	p value
Actual acquisition time after injection (min)
Early scan	15 (IQR 13–19)	15 (IQR 13–22)	14 (IQR 12–17)	0.08
Late scan 1 h	66 (IQR 62–71)	69 (IQR 64–73)	64 (IQR 59–67)	0.01
Late scan 2 h	118 (IQR 115–123)	119 (IQR 116–123)	117 (IQR 114–122)	0.26
Late scan 3 h	178 (IQR 176–182)	179 (IQR 176–182)	177 (IQR 174–181)	0.17
Late scan 4 h	239 (IQR 236–245)	238 (IQR 236–246)	240 (IQR 236–245)	0.70
H/M ratio
Early scan	1.60 ± 0.15	1.55 ± 0.15	1.64 ± 0.14	0.03
Late scan 1 h	1.60 ± 0.18	1.54 ± 0.16	1.66 ± 0.18	0.02
Late scan 2 h	1.56 ± 0.19	1.51 ± 0.17	1.61 ± 0.21	0.09
Late scan 3 h	1.53 ± 0.19	1.47 ± 0.16	1.59 ± 0.20	0.03
Late scan 4 h	1.52 ± 0.20	1.46 ± 0.17	1.58 ± 0.21	0.03
Washout rate (%)
Late scan 1 h	11 ± 12	13 ± 12	9 ± 11	0.23
Late scan 2 h	21 ± 16	21 ± 16	21 ± 16	0.96
Late scan 3 h	29 ± 17	32 ± 17	26 ± 17	0.29
Late scan 4 h	34 ± 17	36 ± 17	33 ± 17	0.50

HF heart failure, IQR interquartile range