{
  "ptid_time": "137_S_0800_2014-08-27",
  "img_path": "/data/qiuhui/data/adni/images/137_S_0800/2014-08-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 45,006 mm³, 4.3% below the reference mean. With a Z-score of -0.12 (45.1th percentile), this represents normal volume ; hippocampal volume measures 5,667 mm³, 18.7% below the reference mean. With a Z-score of -1.61 (5.3th percentile), this represents moderate atrophy; whole brain volume measures 983,924 mm³, 4.4% below the reference mean. With a Z-score of -0.58 (28.2th percentile), this represents normal volume . ",
  "text_data": "Age is 82.0 years. Gender is Male. Education: 12 years. MMSE: 26.0. MoCA: 23.0. Logical Memory: 2.0. APOEε4 alleles: 2.0. Biomarker levels: Florbetapir (AV45): 1.55 SUVR (profound elevated). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The hippocampal volume shows moderate atrophy (Z-score -1.61, 5.3th percentile), which is a strong biomarker for Alzheimer's pathology, while ventricular and whole brain volumes are within normal ranges. The MMSE (26) and MoCA (23) scores suggest mild cognitive impairment, and the presence of two APOE4 alleles along with profoundly elevated AV45 (amyloid PET) further supports Alzheimer's pathology.  \nDiagnosis: **MCI (likely due to Alzheimer's disease)**  \nConfidence: **High**",
  "timestamp": "2025-07-26T16:19:02.197063"
}