{
  "ptid_time": "114_S_4404_2012-01-20",
  "img_path": "/data/qiuhui/data/adni/images/114_S_4404/2012-01-20/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 25,729 mm³, 30.4% below the reference mean. With a Z-score of -0.82 (20.6th percentile), this represents normal volume ; hippocampal volume measures 7,675 mm³, 18.2% above the reference mean. With a Z-score of 1.46 (92.7th percentile), this represents mild enlargement; whole brain volume measures 926,426 mm³, 0.2% below the reference mean. With a Z-score of -0.02 (49.1th percentile), this represents normal volume ; entorhinal cortex volume measures 2,972 mm³, 14.2% below the reference mean. With a Z-score of -0.76 (22.2th percentile), this represents normal volume ; fusiform gyrus volume measures 16,387 mm³, 1.7% above the reference mean. With a Z-score of 0.13 (55.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,005 mm³, 11.0% above the reference mean. With a Z-score of 0.98 (83.5th percentile), this represents normal volume . ",
  "text_data": "Age is 82.5 years. Gender is Female. Education: 12 years. MMSE: 29.0. MoCA: 20.0. Logical Memory: 5.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.51 SUVR (profound elevated); Amyloid beta: 652.00 pg/mL (normal ); Total tau: 212.00 pg/mL (normal ); Phosphorylated tau: 21.19 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The brain volume measures are largely within normal ranges, with mild hippocampal enlargement and normal Aβ, T-tau, and P-tau levels. However, the MoCA score of 20 suggests cognitive impairment, while the MMSE of 29 is borderline normal. The profound AV45 elevation indicates significant amyloid deposition despite normal CSF biomarkers.  \nDiagnosis: MCI  \nConfidence: Medium",
  "timestamp": "2025-07-26T11:46:39.761329"
}