{
  "ptid_time": "129_S_6621_2019-11-22",
  "img_path": "/data/qiuhui/data/adni/images/129_S_6621/2019-11-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,590 mm³, 10.6% above the reference mean. With a Z-score of 0.30 (61.9th percentile), this represents normal volume ; hippocampal volume measures 6,990 mm³, 10.5% below the reference mean. With a Z-score of -1.46 (7.3th percentile), this represents mild atrophy; whole brain volume measures 994,449 mm³, 4.4% below the reference mean. With a Z-score of -0.53 (29.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,174 mm³, 14.1% below the reference mean. With a Z-score of -1.10 (13.5th percentile), this represents mild atrophy; fusiform gyrus volume measures 16,583 mm³, 10.0% below the reference mean. With a Z-score of -0.91 (18.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,081 mm³, 16.8% below the reference mean. With a Z-score of -1.39 (8.3th percentile), this represents mild atrophy. ",
  "text_data": "Age is 58.4 years. Gender is Female. Education: 16 years. MMSE: 28.0. MoCA: 23.0. Logical Memory: 8.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume (Z-score -1.46, 7.3th percentile) and entorhinal cortex volume (Z-score -1.10, 13.5th percentile) show mild atrophy, which are early markers of Alzheimer’s pathology. The MoCA score of 23 suggests mild cognitive impairment, while the MMSE of 28 is still within normal range, indicating possible early-stage cognitive decline.  \n\n**Diagnosis:** **MCI (Mild Cognitive Impairment)**  \n**Confidence:** **Medium** (due to borderline MoCA score and mild atrophy in key regions, but no clear dementia-level impairment yet)",
  "timestamp": "2025-07-26T14:20:22.463299"
}