{
  "ptid_time": "024_S_6005_2019-03-25",
  "img_path": "/data/qiuhui/data/adni/images/024_S_6005/2019-03-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,697 mm³, 11.8% below the reference mean. With a Z-score of -0.30 (38.4th percentile), this represents normal volume ; hippocampal volume measures 8,243 mm³, 7.3% above the reference mean. With a Z-score of 0.82 (79.3th percentile), this represents normal volume ; whole brain volume measures 1,124,610 mm³, 9.3% above the reference mean. With a Z-score of 1.15 (87.6th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,349 mm³, 11.7% above the reference mean. With a Z-score of 0.91 (81.8th percentile), this represents normal volume ; fusiform gyrus volume measures 19,919 mm³, 9.4% above the reference mean. With a Z-score of 1.06 (85.5th percentile), this represents mild enlargement; middle temporal gyrus volume measures 24,540 mm³, 19.6% above the reference mean. With a Z-score of 1.74 (95.9th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 69.5 years. Gender is Female. Education: 20 years. MMSE: 30.0. MoCA: 24.0. Logical Memory: 21.0. APOEε4 alleles: 1.0. Biomarker levels: Flobetaben (FBB): 1.12 SUVR (mild elevated). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements (hippocampus, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are all above the reference mean, with Z-scores indicating normal to enlarged volumes. The MMSE score of 30 is normal, but the MoCA score of 24 suggests mild cognitive impairment (MCI). The presence of one APOE4 allele increases Alzheimer's risk but does not confirm pathology.  \n\n**Diagnosis:** **MCI** (due to MoCA score discrepancy despite normal brain volumes)  \n**Confidence:** **Medium** (MoCA suggests impairment, but structural imaging does not show atrophy typical of dementia)",
  "timestamp": "2025-07-26T03:24:12.014768"
}