{
  "ptid_time": "003_S_0981_2013-03-29",
  "img_path": "/data/qiuhui/data/adni/images/003_S_0981/2013-03-29/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,541 mm³, 36.2% below the reference mean. With a Z-score of -5.69 (0.0th percentile), this represents profound atrophy; whole brain volume measures 825,108 mm³, 9.3% below the reference mean. With a Z-score of -1.04 (14.9th percentile), this represents mild atrophy. ",
  "text_data": "Age is 90.3 years. Gender is Female. Education: 16 years. MMSE: 30.0. MoCA: 25.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.01 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The imaging shows profound ventricular atrophy (Z-score -5.69) and mild whole brain atrophy (Z-score -1.04), which are concerning for neurodegeneration. However, cognitive testing (MMSE 30, MoCA 25) is within normal limits for age, and amyloid PET (AV45) is normal, suggesting no significant Alzheimer's pathology.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to conflicting imaging and cognitive data in an elderly patient)",
  "timestamp": "2025-07-25T20:42:26.956420"
}