{
  "ptid_time": "099_S_2205_2012-12-17",
  "img_path": "/data/qiuhui/data/adni/images/099_S_2205/2012-12-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 48,580 mm³, 3.3% above the reference mean. With a Z-score of 0.10 (53.8th percentile), this represents normal volume ; hippocampal volume measures 5,423 mm³, 22.2% below the reference mean. With a Z-score of -1.92 (2.8th percentile), this represents moderate atrophy; whole brain volume measures 1,150,560 mm³, 11.8% above the reference mean. With a Z-score of 1.55 (93.9th percentile), this represents moderate enlargement; entorhinal cortex volume measures 2,498 mm³, 37.1% below the reference mean. With a Z-score of -2.43 (0.8th percentile), this represents significant atrophy; fusiform gyrus volume measures 18,632 mm³, 3.1% above the reference mean. With a Z-score of 0.27 (60.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,455 mm³, 6.4% above the reference mean. With a Z-score of 0.57 (71.6th percentile), this represents normal volume . ",
  "text_data": "Age is 86.7 years. Gender is Male. Education: 12 years. MMSE: 26.0. MoCA: 22.0. Logical Memory: 7.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The data shows significant atrophy in the hippocampus (-1.92 Z-score, 2.8th percentile) and entorhinal cortex (-2.43 Z-score, 0.8th percentile), which are key regions affected in Alzheimer's disease. Despite normal cognitive screening scores (MMSE 26, MoCA 22), the structural changes suggest early neurodegeneration.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (Cognitive scores are borderline, but structural atrophy is concerning for early pathology.)",
  "timestamp": "2025-07-26T11:03:51.315751"
}