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EJNMMI Research

Table 2 Heart-to-background uptake ratio according to the Perugini grade

From: Quantification of myocardial 99mTc-labeled bisphosphonate uptake with cadmium zinc telluride camera in patients with transthyretin-related cardiac amyloidosis

Heart-to-background ratio

Perugini 1

Perugini 2

Perugini 3

Whole-body

1.45 ± 0.04*

1.65 ± 0.22†/‡

2.42 ± 0.67‡

SPECT anterior projection

1.51 ± 0.36††

1.63 ± 0.24†/‡

2.27 ± 0.67‡

SPECT LAO projection

1.24 ± 0.06*

1.77 ± 0.29†/‡

2.35 ± 0.70‡

SPECT 3D

1.96 ± 0.88*

3.07 ± 0.63†

5.01 ± 1.85

  1. *p < 0.01. † p < 0.0001 and ††p < 0.05 vs. Perugini grade 3. ‡p < 0.0001 vs. SPECT 3D
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