{
  "ptid_time": "130_S_4352_2012-11-14",
  "img_path": "/data/qiuhui/data/adni/images/130_S_4352/2012-11-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 47,863 mm³, 1.8% above the reference mean. With a Z-score of 0.05 (52.1th percentile), this represents normal volume ; hippocampal volume measures 6,194 mm³, 11.1% below the reference mean. With a Z-score of -0.96 (16.9th percentile), this represents normal volume ; whole brain volume measures 1,035,650 mm³, 0.6% above the reference mean. With a Z-score of 0.08 (53.3th percentile), this represents normal volume ; entorhinal cortex volume measures 3,477 mm³, 12.4% below the reference mean. With a Z-score of -0.81 (20.9th percentile), this represents normal volume ; fusiform gyrus volume measures 15,937 mm³, 11.8% below the reference mean. With a Z-score of -1.02 (15.4th percentile), this represents mild atrophy; middle temporal gyrus volume measures 19,517 mm³, 3.2% below the reference mean. With a Z-score of -0.29 (38.6th percentile), this represents normal volume . ",
  "text_data": "Age is 84.6 years. Gender is Male. Education: 16 years. MMSE: 29.0. MoCA: 24.0. Logical Memory: 8.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal and entorhinal cortex volumes are slightly below the reference mean but still within the normal range (Z-scores > -1). The fusiform gyrus shows mild atrophy (Z-score -1.02), but other regions are normal. Cognitive scores (MMSE 29, MoCA 24) are borderline for MCI but not dementia, and there is no APOE4 risk allele.  \n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (Cognitive scores suggest possible MCI, but structural changes are mild and not strongly indicative of neurodegeneration.)",
  "timestamp": "2025-07-26T14:40:46.443259"
}