{
  "ptid_time": "007_S_4637_2014-05-05",
  "img_path": "/data/qiuhui/data/adni/images/007_S_4637/2014-05-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,918 mm³, 3.0% above the reference mean. With a Z-score of 0.07 (52.8th percentile), this represents normal volume ; hippocampal volume measures 6,387 mm³, 10.2% below the reference mean. With a Z-score of -0.94 (17.4th percentile), this represents normal volume ; whole brain volume measures 974,666 mm³, 0.0% above the reference mean. With a Z-score of 0.00 (50.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,857 mm³, 5.0% above the reference mean. With a Z-score of 0.31 (62.1th percentile), this represents normal volume ; fusiform gyrus volume measures 15,389 mm³, 9.5% below the reference mean. With a Z-score of -0.87 (19.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,176 mm³, 5.2% below the reference mean. With a Z-score of -0.45 (32.6th percentile), this represents normal volume . ",
  "text_data": "Age is 72.8 years. Gender is Female. Education: 18 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.11 SUVR (normal ); Amyloid beta: 347.10 pg/mL (moderate reduced); Total tau: 209.60 pg/mL (normal ); Phosphorylated tau: 20.84 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements are largely within normal ranges, with only mild reductions in hippocampal and fusiform gyrus volumes (both still classified as normal). Cognitive scores (MMSE 30, MoCA 29) are intact, and biomarkers show moderately reduced Aβ but normal tau and AV45.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to moderately reduced Aβ, which may indicate early pathological changes despite normal cognition)",
  "timestamp": "2025-07-25T22:05:52.402886"
}