{
  "ptid_time": "052_S_1251_2009-03-16",
  "img_path": "/data/qiuhui/data/adni/images/052_S_1251/2009-03-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,631 mm³, 22.9% below the reference mean. With a Z-score of -0.53 (30.0th percentile), this represents normal volume ; hippocampal volume measures 7,487 mm³, 5.2% above the reference mean. With a Z-score of 0.48 (68.4th percentile), this represents normal volume ; whole brain volume measures 944,070 mm³, 3.1% below the reference mean. With a Z-score of -0.40 (34.6th percentile), this represents normal volume ; entorhinal cortex volume measures 3,876 mm³, 5.5% above the reference mean. With a Z-score of 0.34 (63.3th percentile), this represents normal volume ; fusiform gyrus volume measures 15,825 mm³, 7.0% below the reference mean. With a Z-score of -0.64 (26.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,059 mm³, 0.6% below the reference mean. With a Z-score of -0.05 (48.0th percentile), this represents normal volume . ",
  "text_data": "Age is 76.2 years. Gender is Female. Education: 13 years. MMSE: 29.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. The MMSE score of 29 is within the normal range (≥26), and the absence of APOE4 alleles further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T07:45:40.410769"
}