{
  "ptid_time": "168_S_6619_2018-11-05",
  "img_path": "/data/qiuhui/data/adni/images/168_S_6619/2018-11-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 58,080 mm³, 50.8% above the reference mean. With a Z-score of 1.22 (88.8th percentile), this represents mild enlargement; hippocampal volume measures 7,499 mm³, 0.8% below the reference mean. With a Z-score of -0.08 (46.9th percentile), this represents normal volume ; whole brain volume measures 1,059,610 mm³, 1.8% below the reference mean. With a Z-score of -0.24 (40.6th percentile), this represents normal volume ; entorhinal cortex volume measures 5,186 mm³, 26.5% above the reference mean. With a Z-score of 1.80 (96.4th percentile), this represents moderate enlargement; fusiform gyrus volume measures 18,177 mm³, 3.5% below the reference mean. With a Z-score of -0.30 (38.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,926 mm³, 1.9% below the reference mean. With a Z-score of -0.17 (43.1th percentile), this represents normal volume . ",
  "text_data": "Age is 71.9 years. Gender is Male. Education: 12 years. Handedness: Left. Race: White. MMSE: 27.0. MoCA: 26.0. Logical Memory: 4.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.02 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The ventricular volume shows mild enlargement (Z-score 1.22), which can be associated with atrophy, but hippocampal and whole brain volumes are within normal ranges. The entorhinal cortex shows moderate enlargement (Z-score 1.80), which is atypical for Alzheimer's but may reflect individual variability. Cognitive scores (MMSE 27, MoCA 26) are within normal limits, and amyloid PET (AV45) is negative.  \n\nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to atypical entorhinal enlargement but otherwise normal biomarkers and cognitive performance)",
  "timestamp": "2025-07-26T17:22:24.282174"
}