{
  "ptid_time": "168_S_6350_2018-05-14",
  "img_path": "/data/qiuhui/data/adni/images/168_S_6350/2018-05-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 25,030 mm³, 10.8% below the reference mean. With a Z-score of -0.25 (40.2th percentile), this represents normal volume ; hippocampal volume measures 7,644 mm³, 7.4% above the reference mean. With a Z-score of 0.68 (75.2th percentile), this represents normal volume ; whole brain volume measures 1,006,050 mm³, 3.2% above the reference mean. With a Z-score of 0.41 (65.7th percentile), this represents normal volume ; entorhinal cortex volume measures 4,683 mm³, 27.5% above the reference mean. With a Z-score of 1.69 (95.4th percentile), this represents moderate enlargement; fusiform gyrus volume measures 18,032 mm³, 6.0% above the reference mean. With a Z-score of 0.55 (70.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,297 mm³, 16.3% above the reference mean. With a Z-score of 1.42 (92.2th percentile), this represents mild enlargement. ",
  "text_data": "Age is 77.4 years. Gender is Female. Education: 14 years. Handedness: Right. Race: White. MMSE: 26.0. MoCA: 22.0. Logical Memory: 6.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.09 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measures are largely within or above the normal range, with no significant atrophy in key regions like the hippocampus or ventricles. Cognitive scores (MMSE 26, MoCA 22) suggest mild cognitive impairment (MCI), but the absence of APOE4 and normal AV45 (amyloid PET) reduces the likelihood of Alzheimer's pathology.  \n\n**Diagnosis:** **MCI** (likely non-amnestic or non-Alzheimer's subtype)  \n**Confidence:** **Medium** (due to cognitive deficits without clear structural or biomarker support for neurodegeneration)",
  "timestamp": "2025-07-26T17:20:12.466748"
}