{
  "ptid_time": "018_S_4400_2015-12-14",
  "img_path": "/data/qiuhui/data/adni/images/018_S_4400/2015-12-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,905 mm³, 40.5% below the reference mean. With a Z-score of -0.97 (16.6th percentile), this represents normal volume ; hippocampal volume measures 8,497 mm³, 12.4% above the reference mean. With a Z-score of 1.21 (88.7th percentile), this represents mild enlargement; whole brain volume measures 994,384 mm³, 7.9% below the reference mean. With a Z-score of -1.02 (15.3th percentile), this represents mild atrophy; entorhinal cortex volume measures 3,812 mm³, 7.0% below the reference mean. With a Z-score of -0.48 (31.7th percentile), this represents normal volume ; fusiform gyrus volume measures 17,211 mm³, 8.6% below the reference mean. With a Z-score of -0.74 (23.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,275 mm³, 14.4% below the reference mean. With a Z-score of -1.29 (9.8th percentile), this represents mild atrophy. ",
  "text_data": "Age is 75.1 years. Gender is Male. Education: 20 years. MMSE: 30.0. MoCA: 24.0. Logical Memory: 17.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.41 SUVR (significant elevated). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The MMSE score of 30 is normal, but the MoCA score of 24 suggests mild cognitive impairment (MCI). The AV45 scan shows significant amyloid burden, and the APOE4 allele increases Alzheimer's risk. Brain volumes show mild atrophy in the whole brain and middle temporal gyrus, but hippocampal volume is mildly enlarged, which is atypical for Alzheimer's.  \nDiagnosis: MCI  \nConfidence: Medium",
  "timestamp": "2025-07-26T00:58:40.188757"
}