Table 3 Comparisons between S and calculated S (Ŝ) for each group (YC-0: young controls, the zero-point of the Centiloid scale; and AD-100: subjects with Alzheimer’s disease, the 100-point of the scale), using each of the variations of Ŝ (defined in Table 2).
From: Considerations for Performing Level-2 Centiloid Transformations for Amyloid PET SUVR values
YC-0 | AD-100 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Mean (SUVR) | Mean Diff from S (SUVR) | Mean % Diff from S (SUVR) | Mean (CL) | Mean Diff from S (CL) | Mean (SUVR) | Mean Diff from S (SUVR) | Mean % Diff from S (SUVR) | Mean (CL) | Mean Diff from S (CL) | |
S | 1.0095 | 0.00000 | 0.00% | 0.000 | 0.000 | 2.0761 | 0.00000 | 0.00% | 100.00 | 0 |
Ŝ1-Step_linear | 1.0098 | 0.00029 | 0.03% | 0.027 | 0.027 | 2.0759 | −0.00022 | −0.01% | 099.98 | −0.02042 |
Ŝ1-Step_Deming | 1.0172 | 0.00773 | 0.76% | 0.718 | 0.718 | 2.0703 | −0.00579 | −0.28% | 099.46 | −0.54286 |
Ŝ2-Step_linear | 1.0057 | −0.00382 | −0.38% | −0.361 | −0.361 | 2.0790 | 0.00291 | 0.14% | 100.27 | 0.27258 |
