{
  "ptid_time": "129_S_0778_2007-02-16",
  "img_path": "/data/qiuhui/data/adni/images/129_S_0778/2007-02-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,972 mm³, 24.8% below the reference mean. With a Z-score of -0.59 (27.6th percentile), this represents normal volume ; hippocampal volume measures 7,171 mm³, 5.1% below the reference mean. With a Z-score of -0.50 (30.8th percentile), this represents normal volume ; whole brain volume measures 1,021,570 mm³, 5.4% below the reference mean. With a Z-score of -0.70 (24.3th percentile), this represents normal volume ; entorhinal cortex volume measures 4,304 mm³, 5.0% above the reference mean. With a Z-score of 0.34 (63.2th percentile), this represents normal volume ; fusiform gyrus volume measures 18,404 mm³, 2.3% below the reference mean. With a Z-score of -0.20 (42.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,198 mm³, 8.7% above the reference mean. With a Z-score of 0.78 (78.3th percentile), this represents normal volume . ",
  "text_data": "Age is 72.9 years. Gender is Male. Education: 13 years. MMSE: 27.0. APOEε4 alleles: 1.0. ",
  "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 27 is within the normal range (≥26), and while APOE4 is a risk factor, it does not alone indicate cognitive impairment.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T14:09:05.005949"
}