{
  "ptid_time": "137_S_4536_2014-03-25",
  "img_path": "/data/qiuhui/data/adni/images/137_S_4536/2014-03-25/t1.nii.gz",
  "img_finding": "Image findings: hippocampal volume measures 5,882 mm³, 17.3% below the reference mean. With a Z-score of -1.59 (5.6th percentile), this represents moderate atrophy; whole brain volume measures 981,419 mm³, 0.7% above the reference mean. With a Z-score of 0.09 (53.5th percentile), this represents normal volume . ",
  "text_data": "Age is 79.9 years. Gender is Female. Education: 17 years. MMSE: 27.0. MoCA: 22.0. Logical Memory: 8.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.03 SUVR (normal ); Total tau: 302.30 pg/mL (normal ); Phosphorylated tau: 24.47 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume shows moderate atrophy (Z-score -1.59, 5.6th percentile), while whole brain volume is normal. Cognitive testing (MMSE 27, MoCA 22) suggests mild impairment, but biomarkers (tau, amyloid) are normal.  \n**Diagnosis:** **MCI** (due to hippocampal atrophy and cognitive decline, but no significant biomarker evidence of Alzheimer’s pathology).  \n**Confidence:** **Medium** (atypical for AD given normal amyloid/tau, but hippocampal atrophy and MoCA score suggest MCI).",
  "timestamp": "2025-07-26T16:35:34.539595"
}