{
  "ptid_time": "094_S_0921_2006-10-02",
  "img_path": "/data/qiuhui/data/adni/images/094_S_0921/2006-10-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 33,122 mm³, 14.0% below the reference mean. With a Z-score of -0.34 (36.9th percentile), this represents normal volume ; whole brain volume measures 1,147,010 mm³, 6.3% above the reference mean. With a Z-score of 0.81 (79.2th percentile), this represents normal volume . ",
  "text_data": "Age is 71.4 years. Gender is Male. Education: 19 years. Handedness: Right. Race: White. Medical history: Cardiovascular; Musculoskeletal; Smoking; Major Surgical Procedures. MMSE: 26.0. Logical Memory: 4.0. APOEε4 alleles: 1.0. Biomarker levels: Amyloid beta: 608.20 pg/mL (mild reduced); Total tau: 435.90 pg/mL (significant elevated); Phosphorylated tau: 48.22 pg/mL (profound elevated). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The patient shows normal brain volumes but has significant biomarker abnormalities (elevated T-tau and P-tau, mildly reduced Aβ), which are strongly associated with Alzheimer's pathology. The MMSE score of 26 is borderline but still within normal limits for age.  \n**Diagnosis:** **Mild Cognitive Impairment (MCI)** (likely due to Alzheimer's pathology)  \n**Confidence:** **Medium** (biomarkers strongly suggest neurodegeneration, but cognitive scores are not yet in the dementia range)",
  "timestamp": "2025-07-26T10:13:49.773679"
}