{
  "ptid_time": "100_S_0047_2006-06-09",
  "img_path": "/data/qiuhui/data/adni/images/100_S_0047/2006-06-09/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 62,528 mm³, 33.0% above the reference mean. With a Z-score of 0.96 (83.1th percentile), this represents normal volume ; hippocampal volume measures 6,939 mm³, 0.4% below the reference mean. With a Z-score of -0.04 (48.6th percentile), this represents normal volume ; whole brain volume measures 1,064,520 mm³, 3.4% above the reference mean. With a Z-score of 0.45 (67.4th percentile), this represents normal volume ; entorhinal cortex volume measures 4,437 mm³, 11.8% above the reference mean. With a Z-score of 0.77 (78.0th percentile), this represents normal volume ; fusiform gyrus volume measures 17,219 mm³, 4.7% below the reference mean. With a Z-score of -0.41 (34.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,074 mm³, 4.5% above the reference mean. With a Z-score of 0.40 (65.6th percentile), this represents normal volume . ",
  "text_data": "Age is 85.2 years. Gender is Male. Education: 20 years. MMSE: 28.0. 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 relative to reference means and Z-scores. The MMSE score of 28 is within the normal range (≥26), and the absence of APOE4 alleles reduces genetic risk for Alzheimer's.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T11:15:37.124090"
}