{
  "ptid_time": "129_S_4396_2011-12-01",
  "img_path": "/data/qiuhui/data/adni/images/129_S_4396/2011-12-01/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,630 mm³, 30.1% below the reference mean. With a Z-score of -0.69 (24.6th percentile), this represents normal volume ; hippocampal volume measures 6,707 mm³, 5.7% below the reference mean. With a Z-score of -0.53 (30.0th percentile), this represents normal volume ; whole brain volume measures 898,689 mm³, 7.8% below the reference mean. With a Z-score of -0.98 (16.3th percentile), this represents normal volume ; entorhinal cortex volume measures 3,718 mm³, 1.2% above the reference mean. With a Z-score of 0.08 (53.0th percentile), this represents normal volume ; fusiform gyrus volume measures 16,760 mm³, 1.5% below the reference mean. With a Z-score of -0.14 (44.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,627 mm³, 2.4% above the reference mean. With a Z-score of 0.21 (58.2th percentile), this represents normal volume . ",
  "text_data": "Age is 78.4 years. Gender is Female. Education: 12 years. Handedness: Right. Race: White. Medical history: Neurologic; Head, Eyes, Ears, Nose and Throat; Cardiovascular; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Renal-Genitourinary; Major Surgical Procedures. MMSE: 30.0. MoCA: 27.0. Logical Memory: 12.0. Laboratory findings: . APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.95 SUVR (mild reduced); Amyloid beta: 981.60 pg/mL (normal ); Total tau: 166.50 pg/mL (normal ); Phosphorylated tau: 13.69 pg/mL (mild reduced). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges based on Z-scores and percentiles. Cognitive scores (MMSE 30, MoCA 27) are normal, and biomarkers (Aβ normal, T-tau normal, P-tau mild reduced, AV45 mild reduced) do not strongly suggest Alzheimer's pathology.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T14:16:46.453107"
}