. Author manuscript; available in PMC: 2023 Aug 5.

Published in final edited form as: Nat Neurosci. 2023 Jul 10;26(8):1449–1460. doi: 10.1038/s41593-023-01359-8

Extended Data Table 4 ∣.

Conversion equations for converting PiB-PET values to centiloid

Aβ PET Measure	Partial Volume Corrected	Equation
PiB-BP	No	Centiloid = 122.5 x PiB – 6.2
	Yes	Centiloid = 52.0 x PiB – 4.2
PiB-SUVR	No	Centiloid = 102.8 x PiB – 112.2
	Yes	Centiloid = 40.7 x PiB – 42.9

The four equations provided allow researchers to convert extracted cortical summary PiB-PET values to centiloid units. These equations cover both SUVR-derived and BP-derived measures with and without partial volume correction.