{
  "ptid_time": "002_S_0413_2013-05-10",
  "img_path": "/data/qiuhui/data/adni/images/002_S_0413/2013-05-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 33,726 mm³, 8.8% below the reference mean. With a Z-score of -0.24 (40.7th percentile), this represents normal volume ; hippocampal volume measures 6,776 mm³, 4.3% above the reference mean. With a Z-score of 0.35 (63.6th percentile), this represents normal volume ; whole brain volume measures 1,054,490 mm³, 13.6% above the reference mean. With a Z-score of 1.63 (94.9th percentile), this represents moderate enlargement; entorhinal cortex volume measures 4,340 mm³, 25.3% above the reference mean. With a Z-score of 1.37 (91.4th percentile), this represents mild enlargement; fusiform gyrus volume measures 20,530 mm³, 27.4% above the reference mean. With a Z-score of 2.06 (98.0th percentile), this represents significant enlargement; middle temporal gyrus volume measures 20,324 mm³, 12.7% above the reference mean. With a Z-score of 1.13 (87.1th percentile), this represents mild enlargement. ",
  "text_data": "Age is 83.3 years. Gender is Female. Education: 16 years. MMSE: 30.0. MoCA: 30.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.98 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements show normal or above-average volumes in all regions, including the hippocampus, which is typically affected in Alzheimer's. Cognitive scores (MMSE, MoCA) are perfect, and amyloid PET (AV45) is normal. No APOE4 risk allele is present.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-25T20:01:43.974764"
}