{
  "ptid_time": "033_S_5259_2019-10-30",
  "img_path": "/data/qiuhui/data/adni/images/033_S_5259/2019-10-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,161 mm³, 48.2% below the reference mean. With a Z-score of -1.30 (9.7th percentile), this represents mild atrophy; hippocampal volume measures 7,167 mm³, 10.4% above the reference mean. With a Z-score of 0.83 (79.7th percentile), this represents normal volume ; whole brain volume measures 1,011,350 mm³, 9.0% above the reference mean. With a Z-score of 1.08 (85.9th percentile), this represents mild enlargement; entorhinal cortex volume measures 3,562 mm³, 2.9% above the reference mean. With a Z-score of 0.15 (56.2th percentile), this represents normal volume ; fusiform gyrus volume measures 16,787 mm³, 4.2% above the reference mean. With a Z-score of 0.32 (62.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,940 mm³, 5.1% above the reference mean. With a Z-score of 0.45 (67.4th percentile), this represents normal volume . ",
  "text_data": "Age is 84.8 years. Gender is Female. Education: 18 years. MMSE: 29.0. MoCA: 27.0. Logical Memory: 19.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.17 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume data shows mild ventricular atrophy but otherwise normal or above-average volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus). Cognitive scores (MMSE 29, MoCA 27) are within normal limits, and amyloid PET (AV45) is normal. APOE4-negative status further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T05:39:49.284074"
}