{
  "ptid_time": "099_S_4104_2012-01-16",
  "img_path": "/data/qiuhui/data/adni/images/099_S_4104/2012-01-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 23,734 mm³, 38.4% below the reference mean. With a Z-score of -0.92 (17.9th percentile), this represents normal volume ; hippocampal volume measures 7,058 mm³, 6.6% below the reference mean. With a Z-score of -0.65 (25.9th percentile), this represents normal volume ; whole brain volume measures 1,028,730 mm³, 4.7% below the reference mean. With a Z-score of -0.61 (27.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,200 mm³, 2.4% above the reference mean. With a Z-score of 0.16 (56.5th percentile), this represents normal volume ; fusiform gyrus volume measures 17,189 mm³, 8.8% below the reference mean. With a Z-score of -0.75 (22.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,187 mm³, 5.4% below the reference mean. With a Z-score of -0.49 (31.4th percentile), this represents normal volume . ",
  "text_data": "Age is 72.9 years. Gender is Male. Education: 20 years. MMSE: 30.0. MoCA: 25.0. 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) fall within normal ranges based on Z-scores and percentiles. The MMSE score of 30 is normal, while the MoCA score of 25 is slightly below the typical cutoff of 26 but still within the range of normal cognition for age. No APOE4 alleles further reduce Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T11:06:04.272277"
}