Reference tissue normalization in longitudinal 18F-florbetapir positron emission tomography of late mild cognitive impairment

Table 2 Clinical and demographic data of the ADNI subjects in this study

Parameter	Data
Subjects, n	20
Females, n	11
Baseline age, yr	73 ± 8
APOE A1/A2 carriers, n	9
Time between PET scan and CSF, days	6 ± 14
CSF Aβ_1–42, pg/ml	165 ± 45 (baseline) and 161 ± 46 (follow-up)
ADAS-cog score	18 ± 7 (baseline) and 19 ± 10 (follow-up)
Clinical Dementia Rating score	0.5 ± 0 (baseline) and 0.5 ± 0.3 (follow-up)
Mini Mental State Examination score	28 ± 2 (baseline) and 26 ± 3 (follow-up)

Aβ, Amyloid-β; ADAS-cog, Alzheimer’s Disease Assessment Scale–Cognitive subscale; ADNI, Alzheimer’s Disease Neuroimaging Initiative; APOE, apolipoprotein E; CSF, cerebrospinal fluid; PET, positron emission tomography. Data type in this table are number, age, days, CSF levels and results of the test scores

ISSN: 1758-9193