{
  "ptid_time": "941_S_1203_2011-03-23",
  "img_path": "/data/qiuhui/data/adni/images/941_S_1203/2011-03-23/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 38,559 mm³, 18.0% below the reference mean. With a Z-score of -0.52 (30.1th percentile), this represents normal volume ; hippocampal volume measures 6,719 mm³, 3.6% below the reference mean. With a Z-score of -0.31 (37.9th percentile), this represents normal volume ; whole brain volume measures 906,743 mm³, 11.9% below the reference mean. With a Z-score of -1.56 (6.0th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 87.3 years. Gender is Male. Education: 15 years. Handedness: Right. Race: White. MMSE: 30.0. MoCA: 26.0. Logical Memory: 8.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The whole brain volume shows moderate atrophy (Z-score -1.56, 6th percentile), but hippocampal and ventricular volumes are within normal ranges. Cognitive scores (MMSE 30, MoCA 26) are intact for age, and there is no APOE4 genetic risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to isolated whole brain atrophy but preserved cognition and no other biomarkers)",
  "timestamp": "2025-07-26T17:30:28.998346"
}