From: Assessment of cardiac amyloidosis with 99mTc-pyrophosphate (PYP) quantitative SPECT
Groups | Total (n = 37) | Group A: ATTR cardiac amyloidosis (n = 6) | Group B: AL cardiac amyloidosis (n = 10) | Group C: others (n = 21) | p value |
---|---|---|---|---|---|
Planar | |||||
 Visual scores (%) | |||||
  0 | 8.1 | 0 | 0 | 14.3 | < 0.0001 |
  1 | 73 | 0 | 100 | 81 | |
  2 | 8.1 | 33.3 | 0 | 4.8 | |
  3 | 10.8 | 66.7 | 0 | 0 | |
 H/CL ratio | 1.45 ± 0.31 | 1.98 ± 0.29 | 1.28 ± 0.16* | 1.38 ± 0.19* | < 0.0001 |
Quantitative SPECT | |||||
 SUVmax | 2.88 ± 2.36 | 7.50 ± 2.68^,^^ | 1.96 ± 0.35 | 2.00 ± 0.74 | 0.002 |
 SUVmedian | 2.38 ± 1.90 | 6.17 ± 1.92^,^^ | 1.65 ± 0.39 | 1.65 ± 0.60 | 0.001 |
 SUVmean | 2.36 ± 1.90 | 6.16 ± 1.90^,^^ | 1.61 ± 0.40 | 1.63 ± 0.60 | 0.001 |
 SUVbone | 1.09 ± 0.29 | 1.17 ± 0.34 | 1.28 ± 0.22** | 0.97 ± 0.25 | 0.01 |