{
  "ptid_time": "123_S_0072_2006-01-04",
  "img_path": "/data/qiuhui/data/adni/images/123_S_0072/2006-01-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,526 mm³, 25.9% below the reference mean. With a Z-score of -0.62 (26.7th percentile), this represents normal volume ; hippocampal volume measures 8,289 mm³, 9.7% above the reference mean. With a Z-score of 0.94 (82.7th percentile), this represents normal volume ; whole brain volume measures 1,078,950 mm³, 0.0% below the reference mean. With a Z-score of -0.01 (49.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,511 mm³, 10.0% above the reference mean. With a Z-score of 0.68 (75.1th percentile), this represents normal volume ; fusiform gyrus volume measures 19,799 mm³, 5.1% above the reference mean. With a Z-score of 0.43 (66.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,095 mm³, 8.2% above the reference mean. With a Z-score of 0.74 (77.0th percentile), this represents normal volume . ",
  "text_data": "Age is 70.6 years. Gender is Male. Education: 16 years. MMSE: 28.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) are within normal ranges, with Z-scores close to or above the mean. The MMSE score of 28 is within the normal range (≥26), and the absence of APOE4 further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T12:21:22.394279"
}