{
  "ptid_time": "082_S_4208_2012-09-12",
  "img_path": "/data/qiuhui/data/adni/images/082_S_4208/2012-09-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 64,392 mm³, 67.2% above the reference mean. With a Z-score of 1.61 (94.6th percentile), this represents moderate enlargement; hippocampal volume measures 6,257 mm³, 17.2% below the reference mean. With a Z-score of -1.68 (4.6th percentile), this represents moderate atrophy; whole brain volume measures 1,083,590 mm³, 0.4% above the reference mean. With a Z-score of 0.05 (52.0th percentile), this represents normal volume ; entorhinal cortex volume measures 4,061 mm³, 1.0% below the reference mean. With a Z-score of -0.07 (47.4th percentile), this represents normal volume ; fusiform gyrus volume measures 22,593 mm³, 19.9% above the reference mean. With a Z-score of 1.70 (95.5th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 21,996 mm³, 3.1% above the reference mean. With a Z-score of 0.28 (60.9th percentile), this represents normal volume . ",
  "text_data": "Age is 79.2 years. Gender is Male. Education: 20 years. MMSE: 29.0. MoCA: 30.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The patient shows moderate ventricular enlargement and hippocampal atrophy, which are concerning for neurodegenerative changes, but cognitive scores (MMSE 29, MoCA 30) are intact, and APOE4-negative status reduces Alzheimer's risk.  \nDiagnosis: **MCI (Mild Cognitive Impairment)**  \nConfidence: **Medium**  \n\n*Note: While structural changes suggest early neurodegeneration, preserved cognition makes dementia unlikely. MCI is probable, but longitudinal follow-up is needed to confirm progression.*",
  "timestamp": "2025-07-26T10:05:30.840752"
}