{
  "ptid_time": "041_S_4200_2017-10-26",
  "img_path": "/data/qiuhui/data/adni/images/041_S_4200/2017-10-26/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,333 mm³, 0.9% above the reference mean. With a Z-score of 0.02 (50.9th percentile), this represents normal volume ; hippocampal volume measures 7,126 mm³, 0.2% above the reference mean. With a Z-score of 0.01 (50.6th percentile), this represents normal volume ; whole brain volume measures 1,026,540 mm³, 5.3% above the reference mean. With a Z-score of 0.67 (74.9th percentile), this represents normal volume ; entorhinal cortex volume measures 5,137 mm³, 39.9% above the reference mean. With a Z-score of 2.45 (99.3th percentile), this represents significant enlargement; fusiform gyrus volume measures 15,952 mm³, 6.2% below the reference mean. With a Z-score of -0.57 (28.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,323 mm³, 16.5% above the reference mean. With a Z-score of 1.43 (92.3th percentile), this represents mild enlargement. ",
  "text_data": "Age is 76.2 years. Gender is Female. Education: 18 years. MMSE: 30.0. MoCA: 30.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.02 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements show normal or above-normal volumes in most regions, including the hippocampus and entorhinal cortex, which are typically affected in Alzheimer's. Cognitive scores (MMSE, MoCA) are perfect, and amyloid PET (AV45) is normal, with no APOE4 risk alleles.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T07:15:07.399048"
}