{
  "ptid_time": "029_S_0836_2007-03-08",
  "img_path": "/data/qiuhui/data/adni/images/029_S_0836/2007-03-08/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 74,088 mm³, 57.6% above the reference mean. With a Z-score of 1.67 (95.3th percentile), this represents moderate enlargement; hippocampal volume measures 5,850 mm³, 16.0% below the reference mean. With a Z-score of -1.39 (8.3th percentile), this represents mild atrophy; whole brain volume measures 1,068,240 mm³, 3.8% above the reference mean. With a Z-score of 0.50 (69.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,672 mm³, 7.5% below the reference mean. With a Z-score of -0.49 (31.2th percentile), this represents normal volume ; fusiform gyrus volume measures 18,259 mm³, 1.1% above the reference mean. With a Z-score of 0.09 (53.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,436 mm³, 3.6% below the reference mean. With a Z-score of -0.33 (37.2th percentile), this represents normal volume . ",
  "text_data": "Age is 83.6 years. Gender is Male. Education: 16 years. MMSE: 24.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The data shows moderate ventricular enlargement (57.6% above mean, Z-score 1.67) and mild hippocampal atrophy (16.0% below mean, Z-score -1.39), both of which are associated with neurodegenerative changes. The MMSE score of 24 suggests mild cognitive impairment, and the presence of one APOE4 allele increases Alzheimer's risk.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (Hippocampal atrophy and ventricular enlargement support MCI, but clinical correlation is needed to rule out other causes.)",
  "timestamp": "2025-07-26T04:16:39.422841"
}