{
  "ptid_time": "052_S_0951_2010-12-17",
  "img_path": "/data/qiuhui/data/adni/images/052_S_0951/2010-12-17/t1.nii.gz",
  "img_finding": "Image findings: hippocampal volume measures 7,406 mm³, 6.3% above the reference mean. With a Z-score of 0.54 (70.6th percentile), this represents normal volume ; whole brain volume measures 1,002,580 mm³, 2.6% below the reference mean. With a Z-score of -0.34 (36.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,633 mm³, 16.7% above the reference mean. With a Z-score of 1.10 (86.3th percentile), this represents mild enlargement; fusiform gyrus volume measures 20,613 mm³, 14.1% above the reference mean. With a Z-score of 1.22 (88.9th percentile), this represents mild enlargement; middle temporal gyrus volume measures 17,042 mm³, 15.5% below the reference mean. With a Z-score of -1.39 (8.2th percentile), this represents mild atrophy. ",
  "text_data": "Age is 88.8 years. Gender is Male. Education: 18 years. MMSE: 29.0. MoCA: 23.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal and whole brain volumes are within normal ranges, while the entorhinal cortex and fusiform gyrus show mild enlargement. The middle temporal gyrus exhibits mild atrophy, but this isolated finding is not strongly indicative of neurodegeneration. The MMSE score is normal (29/30), but the MoCA (23/30) suggests possible mild cognitive impairment (MCI), though the absence of APOE4 reduces genetic risk.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (due to the discrepancy between MMSE and MoCA, and isolated temporal gyrus atrophy without other significant structural changes).",
  "timestamp": "2025-07-26T07:40:55.195189"
}