{
  "ptid_time": "032_S_6709_2019-04-09",
  "img_path": "/data/qiuhui/data/adni/images/032_S_6709/2019-04-09/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 17,484 mm³, 21.7% below the reference mean. With a Z-score of -0.54 (29.3th percentile), this represents normal volume ; hippocampal volume measures 7,748 mm³, 0.8% above the reference mean. With a Z-score of 0.09 (53.7th percentile), this represents normal volume ; whole brain volume measures 1,008,470 mm³, 2.0% below the reference mean. With a Z-score of -0.25 (40.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,981 mm³, 2.3% above the reference mean. With a Z-score of 0.18 (57.0th percentile), this represents normal volume ; fusiform gyrus volume measures 20,166 mm³, 10.7% above the reference mean. With a Z-score of 1.21 (88.7th percentile), this represents mild enlargement; middle temporal gyrus volume measures 21,485 mm³, 4.7% above the reference mean. With a Z-score of 0.42 (66.2th percentile), this represents normal volume . ",
  "text_data": "Age is 68.5 years. Gender is Female. Education: 18 years. MMSE: 28.0. MoCA: 21.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.14 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements (hippocampus, entorhinal cortex, whole brain) are within normal ranges, with no significant atrophy. However, the MoCA score of 21 suggests mild cognitive impairment, while the MMSE of 28 is borderline normal. The absence of APOE4 and normal AV45 (amyloid PET) reduces the likelihood of Alzheimer's pathology.  \n**Diagnosis:** **MCI** (Mild Cognitive Impairment)  \n**Confidence:** **Medium** (due to conflicting cognitive scores but normal imaging and biomarker data)",
  "timestamp": "2025-07-26T05:09:32.575612"
}