TTR and amyloidosis: Similarly, H/CL ratios were 1.84 ± 0.26, 1.23 ± 0.09, and 1.07 ± 0.12, in the ATTR, AL, and non-amyloidosis groups, respectively, and rSUVH/Ao values were 1.85 ± 0.47, 0.84 ± 0.09, and 0.75 ± 0.11, respectively.