{
  "ptid_time": "116_S_4898_2013-03-11",
  "img_path": "/data/qiuhui/data/adni/images/116_S_4898/2013-03-11/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 40,458 mm³, 5.0% above the reference mean. With a Z-score of 0.12 (54.8th percentile), this represents normal volume ; hippocampal volume measures 5,917 mm³, 21.7% below the reference mean. With a Z-score of -2.12 (1.7th percentile), this represents significant atrophy; whole brain volume measures 1,116,380 mm³, 3.4% above the reference mean. With a Z-score of 0.44 (67.2th percentile), this represents normal volume ; entorhinal cortex volume measures 2,849 mm³, 30.5% below the reference mean. With a Z-score of -2.07 (1.9th percentile), this represents significant atrophy; fusiform gyrus volume measures 20,599 mm³, 9.3% above the reference mean. With a Z-score of 0.80 (78.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,821 mm³, 11.6% above the reference mean. With a Z-score of 1.05 (85.2th percentile), this represents mild enlargement. ",
  "text_data": "Age is 75.7 years. Gender is Male. Education: 20 years. MMSE: 30.0. MoCA: 28.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The hippocampal and entorhinal cortex volumes show significant atrophy (Z-scores of -2.12 and -2.07, respectively), which are hallmark features of Alzheimer's disease. However, cognitive scores (MMSE 30, MoCA 28) are within normal limits, suggesting no significant functional impairment.  \nDiagnosis: **MCI** (Mild Cognitive Impairment)  \nConfidence: **Medium** (due to structural atrophy without cognitive decline, but high risk for progression to dementia)",
  "timestamp": "2025-07-26T12:17:36.219379"
}