{
  "ptid_time": "029_S_0866_2009-10-27",
  "img_path": "/data/qiuhui/data/adni/images/029_S_0866/2009-10-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 32,549 mm³, 11.9% below the reference mean. With a Z-score of -0.32 (37.4th percentile), this represents normal volume ; hippocampal volume measures 6,419 mm³, 1.2% below the reference mean. With a Z-score of -0.09 (46.3th percentile), this represents normal volume ; whole brain volume measures 932,888 mm³, 0.5% above the reference mean. With a Z-score of 0.06 (52.4th percentile), this represents normal volume ; entorhinal cortex volume measures 3,482 mm³, 0.6% above the reference mean. With a Z-score of 0.03 (51.2th percentile), this represents normal volume ; fusiform gyrus volume measures 18,174 mm³, 12.8% above the reference mean. With a Z-score of 0.96 (83.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,646 mm³, 7.7% below the reference mean. With a Z-score of -0.68 (24.7th percentile), this represents normal volume . ",
  "text_data": "Age is 83.0 years. Gender is Female. Education: 13 years. MMSE: 29.0. Logical Memory: 18.0. 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 there is no APOE4 genetic risk factor present.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T04:18:58.968322"
}