{
  "ptid_time": "006_S_1130_2009-02-04",
  "img_path": "/data/qiuhui/data/adni/images/006_S_1130/2009-02-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 17,573 mm³, 37.4% below the reference mean. With a Z-score of -0.86 (19.6th percentile), this represents normal volume ; whole brain volume measures 847,879 mm³, 13.0% below the reference mean. With a Z-score of -1.64 (5.1th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 73.1 years. Gender is Female. Education: 18 years. MMSE: 25.0. Logical Memory: 4.0. APOEε4 alleles: 1.0. Biomarker levels: Pittsburgh compound B: 2.48 SUVR (significant elevated); Amyloid beta: 605.00 pg/mL (mild reduced); Total tau: 613.40 pg/mL (profound elevated); Phosphorylated tau: 61.45 pg/mL (profound elevated). ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "Reasoning: The patient shows moderate whole brain atrophy (Z-score -1.64) with normal ventricular volume. Biomarkers indicate amyloid pathology (Aβ mildly reduced) and significant neurodegeneration (profoundly elevated T-tau and P-tau). The MMSE score of 25 is borderline, suggesting cognitive impairment but not severe dementia.  \nDiagnosis: MCI (likely due to Alzheimer's pathology)  \nConfidence: Medium (biomarkers strongly suggest AD, but MMSE is near the cutoff for dementia)",
  "timestamp": "2025-07-25T21:33:29.561637"
}