{
  "ptid_time": "014_S_6145_2020-03-04",
  "img_path": "/data/qiuhui/data/adni/images/014_S_6145/2020-03-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 29,385 mm³, 4.7% above the reference mean. With a Z-score of 0.11 (54.3th percentile), this represents normal volume ; hippocampal volume measures 6,148 mm³, 13.6% below the reference mean. With a Z-score of -1.25 (10.6th percentile), this represents mild atrophy; whole brain volume measures 975,793 mm³, 0.1% above the reference mean. With a Z-score of 0.01 (50.6th percentile), this represents normal volume ; entorhinal cortex volume measures 3,391 mm³, 7.7% below the reference mean. With a Z-score of -0.47 (31.9th percentile), this represents normal volume ; fusiform gyrus volume measures 16,690 mm³, 1.9% below the reference mean. With a Z-score of -0.17 (43.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,528 mm³, 12.3% above the reference mean. With a Z-score of 1.07 (85.7th percentile), this represents mild enlargement. ",
  "text_data": "Age is 72.3 years. Gender is Female. Education: 16 years. MMSE: 30.0. MoCA: 26.0. Logical Memory: 20.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 1.02 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume shows mild atrophy (Z-score -1.25, 10.6th percentile), which is a key biomarker for Alzheimer's pathology, while other brain regions are within normal ranges. Cognitive scores (MMSE 30, MoCA 26) are borderline for MCI (MoCA <26 is typical for MCI, but 26 is ambiguous). No APOE4 risk allele is present.  \n**Diagnosis:** **MCI** (mild cognitive impairment)  \n**Confidence:** **Medium** (hippocampal atrophy supports neurodegeneration, but cognitive scores are not definitively impaired and APOE4 is absent).",
  "timestamp": "2025-07-25T23:59:05.043998"
}