{
  "ptid_time": "067_S_0077_2007-08-30",
  "img_path": "/data/qiuhui/data/adni/images/067_S_0077/2007-08-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 50,320 mm³, 7.0% above the reference mean. With a Z-score of 0.20 (58.1th percentile), this represents normal volume ; hippocampal volume measures 4,365 mm³, 37.4% below the reference mean. With a Z-score of -3.23 (0.1th percentile), this represents profound atrophy; whole brain volume measures 812,555 mm³, 21.0% below the reference mean. With a Z-score of -2.76 (0.3th percentile), this represents significant atrophy; entorhinal cortex volume measures 1,713 mm³, 56.8% below the reference mean. With a Z-score of -3.72 (0.0th percentile), this represents profound atrophy; fusiform gyrus volume measures 14,043 mm³, 22.3% below the reference mean. With a Z-score of -1.93 (2.7th percentile), this represents moderate atrophy; middle temporal gyrus volume measures 11,045 mm³, 45.2% below the reference mean. With a Z-score of -4.06 (0.0th percentile), this represents profound atrophy. ",
  "text_data": "Age is 81.2 years. Gender is Male. Education: 18 years. MMSE: 21.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "Reasoning: The patient shows profound atrophy in the hippocampus, entorhinal cortex, and middle temporal gyrus—key regions affected in Alzheimer's disease. The MMSE score of 21 suggests cognitive impairment, and the absence of APOE4 does not rule out AD given the structural findings.  \nDiagnosis: Dementia (likely Alzheimer’s disease)  \nConfidence: High",
  "timestamp": "2025-07-26T08:25:13.761723"
}