{
  "ptid_time": "023_S_1126_2007-11-28",
  "img_path": "/data/qiuhui/data/adni/images/023_S_1126/2007-11-28/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 59,119 mm³, 25.7% above the reference mean. With a Z-score of 0.75 (77.3th percentile), this represents normal volume ; whole brain volume measures 990,713 mm³, 3.7% below the reference mean. With a Z-score of -0.49 (31.2th percentile), this represents normal volume . ",
  "text_data": "Age is 81.4 years. Gender is Male. Education: 18 years. MMSE: 23.0. Logical Memory: 0.0. APOEε4 alleles: 0.0. Biomarker levels: Amyloid beta: 580.60 pg/mL (mild reduced); Total tau: 239.90 pg/mL (normal ); Phosphorylated tau: 22.47 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is slightly elevated but still within the normal range, while whole brain volume is mildly reduced but also within normal limits. The MMSE score of 23 suggests mild cognitive impairment, and the presence of mildly reduced Aβ (amyloid-beta) without elevated tau proteins indicates early Alzheimer's pathology but not yet full dementia.  \n\n**Diagnosis:** **MCI (Mild Cognitive Impairment)**  \n**Confidence:** **Medium** (due to borderline MMSE and mild Aβ reduction without significant atrophy or tau abnormalities)",
  "timestamp": "2025-07-26T02:54:42.945783"
}