{
  "ptid_time": "073_S_4382_2012-11-28",
  "img_path": "/data/qiuhui/data/adni/images/073_S_4382/2012-11-28/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,912 mm³, 29.1% below the reference mean. With a Z-score of -0.67 (25.3th percentile), this represents normal volume ; hippocampal volume measures 7,249 mm³, 1.9% above the reference mean. With a Z-score of 0.17 (56.9th percentile), this represents normal volume ; whole brain volume measures 876,607 mm³, 10.1% below the reference mean. With a Z-score of -1.27 (10.3th percentile), this represents mild atrophy; entorhinal cortex volume measures 2,705 mm³, 26.4% below the reference mean. With a Z-score of -1.62 (5.3th percentile), this represents moderate atrophy; fusiform gyrus volume measures 14,595 mm³, 14.2% below the reference mean. With a Z-score of -1.29 (9.8th percentile), this represents mild atrophy; middle temporal gyrus volume measures 17,273 mm³, 9.9% below the reference mean. With a Z-score of -0.86 (19.5th percentile), this represents normal volume . ",
  "text_data": "Age is 76.9 years. Gender is Female. Education: 16 years. MMSE: 27.0. MoCA: 25.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain imaging shows mild to moderate atrophy in key regions (whole brain, entorhinal cortex, fusiform gyrus), but hippocampal volume is normal. Cognitive scores (MMSE 27, MoCA 25) are borderline but still within normal range for age. No APOE4 risk allele is present.  \nDiagnosis: **MCI (Mild Cognitive Impairment)**  \nConfidence: **Medium** (Atrophy patterns suggest early neurodegeneration, but cognitive scores are not clearly impaired enough for dementia.)",
  "timestamp": "2025-07-26T09:44:43.370884"
}