{
  "ptid_time": "116_S_4175_2012-08-03",
  "img_path": "/data/qiuhui/data/adni/images/116_S_4175/2012-08-03/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,453 mm³, 36.5% below the reference mean. With a Z-score of -0.87 (19.1th percentile), this represents normal volume ; hippocampal volume measures 8,478 mm³, 12.2% above the reference mean. With a Z-score of 1.19 (88.2th percentile), this represents mild enlargement; whole brain volume measures 1,049,520 mm³, 2.8% below the reference mean. With a Z-score of -0.36 (36.0th percentile), this represents normal volume ; entorhinal cortex volume measures 4,263 mm³, 4.0% above the reference mean. With a Z-score of 0.27 (60.6th percentile), this represents normal volume ; fusiform gyrus volume measures 19,110 mm³, 1.4% above the reference mean. With a Z-score of 0.12 (54.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,158 mm³, 5.5% below the reference mean. With a Z-score of -0.50 (30.9th percentile), this represents normal volume . ",
  "text_data": "Age is 76.5 years. Gender is Male. Education: 20 years. MMSE: 27.0. MoCA: 23.0. Logical Memory: 9.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The brain volume measures are largely within normal ranges, with mild hippocampal enlargement and no significant atrophy in Alzheimer’s-related regions. Cognitive scores (MMSE 27, MoCA 23) suggest mild cognitive concerns but not severe impairment. APOE4 carrier status increases Alzheimer’s risk, but current data do not indicate dementia.  \n\nDiagnosis: **MCI** (Mild Cognitive Impairment)  \nConfidence: **Medium** (due to borderline MoCA score and APOE4 status, but lack of significant structural atrophy)",
  "timestamp": "2025-07-26T12:08:41.699387"
}