{
  "ptid_time": "009_S_4337_2012-11-12",
  "img_path": "/data/qiuhui/data/adni/images/009_S_4337/2012-11-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 51,571 mm³, 33.9% above the reference mean. With a Z-score of 0.81 (79.2th percentile), this represents normal volume ; whole brain volume measures 1,003,910 mm³, 7.0% below the reference mean. With a Z-score of -0.91 (18.2th percentile), this represents normal volume ; entorhinal cortex volume measures 3,971 mm³, 3.2% below the reference mean. With a Z-score of -0.21 (41.5th percentile), this represents normal volume ; fusiform gyrus volume measures 18,407 mm³, 2.3% below the reference mean. With a Z-score of -0.20 (42.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,669 mm³, 6.2% above the reference mean. With a Z-score of 0.56 (71.2th percentile), this represents normal volume . ",
  "text_data": "Age is 73.0 years. Gender is Male. Education: 12 years. MMSE: 27.0. MoCA: 23.0. Logical Memory: 9.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The brain volume measures (ventricular, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) all fall within normal ranges based on Z-scores and percentiles. The MMSE score of 27 is within the normal range (≥26), but the MoCA score of 23 is borderline (normal ≥26, MCI typically 18-25). No APOE4 alleles are present, which reduces genetic risk for Alzheimer's.  \n\nDiagnosis: **Mild Cognitive Impairment (MCI)**  \nConfidence: **Medium** (due to borderline MoCA score despite normal brain volumes and no APOE4 risk)",
  "timestamp": "2025-07-25T22:19:28.821230"
}