{
  "ptid_time": "003_S_4892_2013-09-19",
  "img_path": "/data/qiuhui/data/adni/images/003_S_4892/2013-09-19/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,431 mm³, 29.8% above the reference mean. With a Z-score of 0.68 (75.2th percentile), this represents normal volume ; hippocampal volume measures 6,566 mm³, 7.7% below the reference mean. With a Z-score of -0.71 (24.0th percentile), this represents normal volume ; whole brain volume measures 930,392 mm³, 4.5% below the reference mean. With a Z-score of -0.57 (28.4th percentile), this represents normal volume . ",
  "text_data": "Age is 76.1 years. Gender is Female. Education: 11 years. MMSE: 26.0. Logical Memory: 3.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "Reasoning: The brain volumes (ventricular, hippocampal, and whole brain) are within normal ranges, though slightly below the reference mean for hippocampal and whole brain volumes. The MMSE score of 26 is borderline but still within the normal range for cognitive screening. The presence of one APOE4 allele increases Alzheimer's risk but does not confirm pathology.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to borderline MMSE and slight volumetric reductions, but no clear evidence of MCI or dementia)",
  "timestamp": "2025-07-25T20:56:54.915387"
}