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KMID : 1130620230190030260
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Journal of Clinical Neurology
2023 Volume.19 No. 3 p.260 ~ p.269
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Comparison Between 18F-Florapronol and 18F-Florbetaben Imaging in Patients With Cognitive Impairment
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Baik Kyoung-Won
Jeon Seun
Park Min-Cheol
Lee Young-Gun
Lee Phil-Hyu
Sohn Young-H.
Ye Byoung-Seok
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Abstract
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Background and Purpose To determine the imaging characteristics and cutoff value of 18F-florapronol (FC119S) quantitative analysis for detecting β-amyloid positivity and Alzheimer’s disease (AD), we compared the findings of FC119S and 18F-florbetaben (FBB) positron- emission tomography (PET) in patients with cognitive impairment.
Methods We prospectively enrolled 35 patients with cognitive impairment who underwent FBB-PET, FC119S-PET, and brain magnetic resonance imaging. We measured global and vertex-wise standardized uptake value ratios (SUVRs) using a surface-based method with the cerebellar gray matter as reference. Optimal global FC119S SUVR cutoffs were determined using receiver operating characteristic curves for β-amyloid positivity based on the global FBB SUVR of 1.478 and presence of AD, respectively. We evaluated the global and vertex-wise SUVR correlations between the two tracers. In addition, we performed correlation analysis for global or vertex-wise SUVR of each tracer with the vertex-wise cortical thicknesses.
Results The optimal global FC119S SUVR cutoff value was 1.385 both for detecting β-amyloid positivity and for detecting AD. Based on the global SUVR cutoff value of each tracer, 32 (91.4%) patients had concordant β-amyloid positivity. The SUVRs of FC119S and FBB had strong global (r=0.72) and vertex-wise (r>0.7) correlations in the overall cortices, except for the parietal and temporal cortices (0.4
Conclusions Quantitative FC119S-PET analysis provided reliable information for detecting β-amyloid deposition and the presence of AD.
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KEYWORD
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amyloid-β, 18F-florbetaben, 18F-florapronol, positron emission tomography
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