{
  "ptid_time": "109_S_4380_2012-03-22",
  "img_path": "/data/qiuhui/data/adni/images/109_S_4380/2012-03-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 32,060 mm³, 16.8% below the reference mean. With a Z-score of -0.40 (34.4th percentile), this represents normal volume ; hippocampal volume measures 9,246 mm³, 22.3% above the reference mean. With a Z-score of 2.18 (98.5th percentile), this represents significant enlargement; whole brain volume measures 1,145,050 mm³, 6.1% above the reference mean. With a Z-score of 0.79 (78.5th percentile), this represents normal volume . ",
  "text_data": "Age is 71.8 years. Gender is Male. Education: 17 years. MMSE: 29.0. MoCA: 28.0. Logical Memory: 10.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.98 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume is significantly enlarged (Z-score 2.18, 98.5th percentile), which is unusual for Alzheimer's disease (AD) as hippocampal atrophy is typical. Ventricular and whole brain volumes are normal. Cognitive scores (MMSE 29, MoCA 28) are intact, and amyloid PET (AV45) is normal, ruling out AD pathology.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:32:39.423725"
}