{
  "ptid_time": "014_S_0520_2006-05-12",
  "img_path": "/data/qiuhui/data/adni/images/014_S_0520/2006-05-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 18,132 mm³, 35.4% below the reference mean. With a Z-score of -0.81 (20.9th percentile), this represents normal volume ; whole brain volume measures 1,096,540 mm³, 12.5% above the reference mean. With a Z-score of 1.57 (94.2th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 77.7 years. Gender is Female. Education: 16 years. Handedness: Right. Race: White. Medical history: Psychiatric; Cardiovascular; Respiratory; Dermatologic-Connective Tissue; Major Surgical Procedures. MMSE: 30.0. Logical Memory: 17.0. APOEε4 alleles: 2.0. Biomarker levels: Amyloid beta: 600.20 pg/mL (mild reduced); Total tau: 251.40 pg/mL (normal ); Phosphorylated tau: 20.72 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The patient has normal cognitive function (MMSE 30), normal ventricular volume, and enlarged whole brain volume. Biomarkers show only mildly reduced Aβ with normal tau levels, and APOE4 homozygosity increases AD risk but does not confirm pathology.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (APOE4 homozygosity and mildly reduced Aβ warrant monitoring, but current cognitive and structural findings are normal)",
  "timestamp": "2025-07-25T23:40:59.880934"
}