{
  "ptid_time": "002_S_0295_2006-11-02",
  "img_path": "/data/qiuhui/data/adni/images/002_S_0295/2006-11-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 39,101 mm³, 16.8% below the reference mean. With a Z-score of -0.49 (31.2th percentile), this represents normal volume ; hippocampal volume measures 6,896 mm³, 1.0% below the reference mean. With a Z-score of -0.09 (46.4th percentile), this represents normal volume ; whole brain volume measures 1,089,680 mm³, 5.9% above the reference mean. With a Z-score of 0.77 (78.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,662 mm³, 7.7% below the reference mean. With a Z-score of -0.51 (30.6th percentile), this represents normal volume ; fusiform gyrus volume measures 18,041 mm³, 0.1% below the reference mean. With a Z-score of -0.01 (49.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,825 mm³, 1.7% below the reference mean. With a Z-score of -0.15 (43.9th percentile), this represents normal volume . ",
  "text_data": "Age is 85.3 years. Gender is Male. Education: 18 years. MMSE: 28.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges based on Z-scores and percentiles. The MMSE score of 28 is within the normal range (≥26), and while APOE4 is a risk factor, there is no structural or cognitive evidence of impairment.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-25T19:59:38.557957"
}