{
  "ptid_time": "024_S_1171_2007-07-09",
  "img_path": "/data/qiuhui/data/adni/images/024_S_1171/2007-07-09/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 84,273 mm³, 118.8% above the reference mean. With a Z-score of 2.85 (99.8th percentile), this represents significant enlargement; hippocampal volume measures 7,508 mm³, 0.7% below the reference mean. With a Z-score of -0.07 (47.4th percentile), this represents normal volume ; whole brain volume measures 1,119,570 mm³, 3.7% above the reference mean. With a Z-score of 0.48 (68.5th percentile), this represents normal volume ; entorhinal cortex volume measures 3,330 mm³, 18.8% below the reference mean. With a Z-score of -1.27 (10.1th percentile), this represents mild atrophy; fusiform gyrus volume measures 15,448 mm³, 18.0% below the reference mean. With a Z-score of -1.53 (6.3th percentile), this represents moderate atrophy; middle temporal gyrus volume measures 22,605 mm³, 5.9% above the reference mean. With a Z-score of 0.53 (70.3th percentile), this represents normal volume . ",
  "text_data": "Age is 72.0 years. Gender is Male. Education: 12 years. MMSE: 24.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "Reasoning: The data shows significant ventricular enlargement (Z-score 2.85) and mild-to-moderate atrophy in the entorhinal cortex (Z-score -1.27) and fusiform gyrus (Z-score -1.53), which are regions vulnerable to Alzheimer's pathology. The MMSE score of 24 suggests mild cognitive impairment, and the presence of one APOE4 allele increases Alzheimer's risk. However, hippocampal volume is normal, which is atypical for early Alzheimer's.  \nDiagnosis: **MCI** (Mild Cognitive Impairment)  \nConfidence: **Medium** (due to conflicting hippocampal preservation but clear atrophy in other AD-vulnerable regions)",
  "timestamp": "2025-07-26T03:13:56.973078"
}