{
  "ptid_time": "002_S_1155_2011-12-22",
  "img_path": "/data/qiuhui/data/adni/images/002_S_1155/2011-12-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 47,452 mm³, 58.0% above the reference mean. With a Z-score of 1.38 (91.6th percentile), this represents mild enlargement; whole brain volume measures 1,131,990 mm³, 0.2% below the reference mean. With a Z-score of -0.03 (48.7th percentile), this represents normal volume ; entorhinal cortex volume measures 3,665 mm³, 14.0% below the reference mean. With a Z-score of -0.97 (16.6th percentile), this represents normal volume ; fusiform gyrus volume measures 22,086 mm³, 10.9% above the reference mean. With a Z-score of 0.91 (81.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,767 mm³, 1.6% above the reference mean. With a Z-score of 0.13 (55.2th percentile), this represents normal volume . ",
  "text_data": "Age is 62.8 years. Gender is Male. Education: 20 years. Handedness: Right. Race: White. MMSE: 29.0. MoCA: 25.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The ventricular volume shows mild enlargement (Z-score 1.38), which can be associated with neurodegenerative changes, but the whole brain volume is normal. The entorhinal cortex is slightly reduced (Z-score -0.97), but not severely atrophic. Cognitive scores (MMSE 29, MoCA 25) are borderline for MCI (MoCA <26 suggests possible MCI), but no significant structural deficits are present. APOE4-negative status lowers Alzheimer's risk.  \nDiagnosis: **MCI** (mild cognitive impairment, likely non-amnestic given preserved entorhinal cortex)  \nConfidence: **Medium** (cognitive scores suggest MCI, but structural changes are mild and APOE4-negative status complicates Alzheimer's-specific progression).",
  "timestamp": "2025-07-25T20:11:30.883793"
}