123I-MIBG Scintigraphic Data
| Parameter | Control (n = 18) | HCM | ||||
|---|---|---|---|---|---|---|
| Group A (n = 28) | Group B (n = 9) | Group C (n = 9) | ||||
| Early H/M | 2.09 ± 0.19 | 1.92 ± 0.25 | 1.93 ± 0.45 | 1.70 ± 0.24* | ||
| Delayed H/M | 2.19 ± 0.26 | 1.87 ± 0.25 | 1.71 ± 0.33* | 1.49 ± 0.26*† | ||
| WR | 0.10 ± 0.06 | 0.18 ± 0.05* | 0.23 ± 0.09* | 0.30 ± 0.04*† | ||
| Regional EU (n) | — | 2.93 ± 3.40 | 4.11 ± 4.68 | 7.44 ± 4.28† | ||
| Regional WR (n) | — | 3.14 ± 4.16 | 5.11 ± 6.51 | 7.11 ± 6.09 | ||
↵* P < 0.05 vs. control.
↵† P < 0.05 vs. HCM with normal LV systolic function.
H/M = heart-to-mediastinum uptake ratio; WR = washout rate; regional EU = number of segments with significantly reduced early 123I-MIBG uptake compared with control group; regional WR = number of segments with significantly increased 123I-MIBG washout rate compared with control group.