{
  "ptid_time": "002_S_0685_2008-08-22",
  "img_path": "/data/qiuhui/data/adni/images/002_S_0685/2008-08-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 41,901 mm³, 0.7% above the reference mean. With a Z-score of 0.11 (54.5th percentile), this represents normal volume ; hippocampal volume measures 7,125 mm³, 1.2% above the reference mean. With a Z-score of 0.68 (75.2th percentile), this represents normal volume ; whole brain volume measures 981,441 mm³, 7.9% above the reference mean. With a Z-score of 0.88 (81.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,601 mm³, 5.0% below the reference mean. With a Z-score of -0.46 (32.2th percentile), this represents normal volume ; fusiform gyrus volume measures 13,980 mm³, 4.6% below the reference mean. With a Z-score of -0.58 (28.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,733 mm³, 1.8% below the reference mean. With a Z-score of -0.94 (17.4th percentile), this represents normal volume . ",
  "text_data": "Age is 91.6 years. Gender is Female. Education: 16 years. MMSE: 30.0. Logical Memory: 19.0. APOEε4 alleles: 0.0. ",
  "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, with most Z-scores close to or above the mean. The MMSE score of 30/30 indicates no cognitive impairment, and the absence of APOE4 alleles further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConf",
  "timestamp": "2025-07-25T20:03:46.924276"
}