{
  "ptid_time": "100_S_0995_2007-05-17",
  "img_path": "/data/qiuhui/data/adni/images/100_S_0995/2007-05-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 30,713 mm³, 9.4% above the reference mean. With a Z-score of 0.22 (58.5th percentile), this represents normal volume ; hippocampal volume measures 4,873 mm³, 31.5% below the reference mean. With a Z-score of -2.89 (0.2th percentile), this represents significant atrophy; whole brain volume measures 963,645 mm³, 1.1% below the reference mean. With a Z-score of -0.14 (44.3th percentile), this represents normal volume ; entorhinal cortex volume measures 2,934 mm³, 20.1% below the reference mean. With a Z-score of -1.23 (10.8th percentile), this represents mild atrophy; fusiform gyrus volume measures 17,053 mm³, 0.2% above the reference mean. With a Z-score of 0.02 (50.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,595 mm³, 3.0% below the reference mean. With a Z-score of -0.26 (39.7th percentile), this represents normal volume . ",
  "text_data": "Age is 79.0 years. Gender is Female. Education: 12 years. MMSE: 23.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The data shows significant hippocampal atrophy (Z-score -2.89, 0.2th percentile) and mild entorhinal cortex atrophy (Z-score -1.23, 10.8th percentile), both key regions affected in Alzheimer's disease. The MMSE score of 23 suggests mild cognitive impairment, and the presence of one APOE4 allele increases Alzheimer's risk.  \n\n**Diagnosis:** **MCI** (Mild Cognitive Impairment)  \n**Confidence:** **High** (due to clear hippocampal atrophy and borderline MMSE score, but not yet meeting full dementia criteria)",
  "timestamp": "2025-07-26T11:20:45.903032"
}