{
  "ptid_time": "072_S_2164_2010-11-02",
  "img_path": "/data/qiuhui/data/adni/images/072_S_2164/2010-11-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 15,796 mm³, 43.7% below the reference mean. With a Z-score of -1.00 (15.8th percentile), this represents mild atrophy; hippocampal volume measures 7,748 mm³, 8.9% above the reference mean. With a Z-score of 0.82 (79.3th percentile), this represents normal volume ; whole brain volume measures 1,086,800 mm³, 11.5% above the reference mean. With a Z-score of 1.45 (92.6th percentile), this represents mild enlargement; entorhinal cortex volume measures 3,903 mm³, 6.3% above the reference mean. With a Z-score of 0.38 (65.0th percentile), this represents normal volume ; fusiform gyrus volume measures 22,076 mm³, 29.8% above the reference mean. With a Z-score of 2.71 (99.7th percentile), this represents significant enlargement; middle temporal gyrus volume measures 20,043 mm³, 4.6% above the reference mean. With a Z-score of 0.40 (65.4th percentile), this represents normal volume . ",
  "text_data": "Age is 70.9 years. Gender is Female. Education: 16 years. Handedness: Right. Race: White. Medical history: Cardiovascular; Dermatologic-Connective Tissue; Musculoskeletal; Allergies or Drug Sensitivities; Major Surgical Procedures. MMSE: 27.0. MoCA: 27.0. Logical Memory: 10.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.16 SUVR (normal ); Amyloid beta: 1097.00 pg/mL (normal ); Total tau: 132.00 pg/mL (mild reduced); Phosphorylated tau: 12.57 pg/mL (mild reduced). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mild ventricular atrophy but otherwise normal or even enlarged volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus). Cognitive scores (MMSE 27, MoCA 27) are within normal limits, and biomarkers (Aβ normal, reduced tau, APOE4 negative) do not suggest Alzheimer’s pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T09:14:20.551262"
}