{
  "ptid_time": "109_S_4594_2014-05-19",
  "img_path": "/data/qiuhui/data/adni/images/109_S_4594/2014-05-19/t1.nii.gz",
  "img_finding": "Image findings: hippocampal volume measures 7,497 mm³, 6.6% below the reference mean. With a Z-score of -0.66 (25.5th percentile), this represents normal volume ; whole brain volume measures 1,158,910 mm³, 2.1% above the reference mean. With a Z-score of 0.30 (61.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,680 mm³, 13.7% below the reference mean. With a Z-score of -0.95 (17.2th percentile), this represents normal volume ; fusiform gyrus volume measures 19,137 mm³, 3.9% below the reference mean. With a Z-score of -0.32 (37.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,734 mm³, 5.9% above the reference mean. With a Z-score of 0.49 (68.7th percentile), this represents normal volume . ",
  "text_data": "Age is 64.1 years. Gender is Male. Education: 20 years. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 0.95 SUVR (mild reduced). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume is slightly reduced but still within the normal range (Z-score -0.66, 25.5th percentile). The entorhinal cortex shows a more pronounced reduction (Z-score -0.95, 17.2nd percentile), though still classified as normal. Other brain volumes are within normal limits. The presence of one APOE4 allele and mild amyloid burden (AV45) suggests some risk but no definitive neurodegeneration.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to borderline entorhinal cortex volume and mild amyloid findings, but no clear structural or clinical evidence of impairment)",
  "timestamp": "2025-07-26T11:35:53.733099"
}