{
  "ptid_time": "109_S_0950_2008-07-15",
  "img_path": "/data/qiuhui/data/adni/images/109_S_0950/2008-07-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 95,813 mm³, 148.8% above the reference mean. With a Z-score of 3.56 (100.0th percentile), this represents profound enlargement; hippocampal volume measures 5,242 mm³, 30.7% below the reference mean. With a Z-score of -2.99 (0.1th percentile), this represents significant atrophy; whole brain volume measures 873,128 mm³, 19.1% below the reference mean. With a Z-score of -2.48 (0.7th percentile), this represents significant atrophy; entorhinal cortex volume measures 3,141 mm³, 23.4% below the reference mean. With a Z-score of -1.59 (5.6th percentile), this represents moderate atrophy; fusiform gyrus volume measures 13,904 mm³, 26.2% below the reference mean. With a Z-score of -2.23 (1.3th percentile), this represents significant atrophy; middle temporal gyrus volume measures 13,547 mm³, 36.5% below the reference mean. With a Z-score of -3.28 (0.1th percentile), this represents profound atrophy. ",
  "text_data": "Age is 75.0 years. Gender is Male. Education: 17 years. Handedness: Unknown. Race: Unknown. MMSE: 27.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The patient shows profound ventricular enlargement and significant atrophy in multiple brain regions, including the hippocampus, whole brain, fusiform gyrus, and middle temporal gyrus, which are strongly associated with Alzheimer's disease. Despite a relatively preserved MMSE score (27/30), the structural changes suggest neurodegeneration beyond normal aging.  \nDiagnosis: **MCI (likely due to Alzheimer's pathology)**  \nConfidence: **Medium** (High confidence in neurodegeneration, but MCI diagnosis is provisional due to the absence of clear functional decline reported in the clinical data.)",
  "timestamp": "2025-07-26T11:28:21.231192"
}