{
  "ptid_time": "129_S_4287_2012-01-25",
  "img_path": "/data/qiuhui/data/adni/images/129_S_4287/2012-01-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 16,611 mm³, 40.8% below the reference mean. With a Z-score of -0.93 (17.5th percentile), this represents normal volume ; hippocampal volume measures 7,799 mm³, 9.6% above the reference mean. With a Z-score of 0.88 (81.1th percentile), this represents normal volume ; whole brain volume measures 968,731 mm³, 0.6% below the reference mean. With a Z-score of -0.08 (47.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,252 mm³, 11.5% below the reference mean. With a Z-score of -0.70 (24.1th percentile), this represents normal volume ; fusiform gyrus volume measures 17,070 mm³, 0.3% above the reference mean. With a Z-score of 0.03 (51.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,479 mm³, 3.6% below the reference mean. With a Z-score of -0.31 (37.7th percentile), this represents normal volume . ",
  "text_data": "Age is 71.4 years. Gender is Female. Education: 17 years. MMSE: 30.0. MoCA: 25.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (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 30 is optimal, and the MoCA score of 25 is within the normal range (though slightly below the typical cutoff of 26, it may still be normal depending on education level). The presence of one APOE4 allele increases Alzheimer's risk but does not confirm impairment.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (MoCA is borderline, but structural imaging and MMSE support normal cognition)",
  "timestamp": "2025-07-26T14:14:41.931695"
}