{
  "ptid_time": "016_S_0354_2006-05-05",
  "img_path": "/data/qiuhui/data/adni/images/016_S_0354/2006-05-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 32,328 mm³, 16.1% below the reference mean. With a Z-score of -0.38 (35.0th percentile), this represents normal volume ; whole brain volume measures 949,496 mm³, 12.0% below the reference mean. With a Z-score of -1.56 (5.9th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 75.8 years. Gender is Male. Education: 16 years. MMSE: 27.0. Logical Memory: 7.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The whole brain volume shows moderate atrophy (Z-score -1.56, 5.9th percentile), while ventricular volume is normal. The MMSE score of 27 is within the normal range, and the absence of APOE4 reduces genetic risk. These findings suggest possible early neurodegeneration but no significant cognitive impairment yet.  \n\n**Diagnosis:** Mild Cognitive Impairment (MCI)  \n**Confidence:** Medium  \n\n*(The moderate atrophy raises concern for neurodegeneration, but the preserved MMSE and lack of APOE4 suggest MCI rather than dementia. Confidence is medium due to the need for further clinical correlation.)*",
  "timestamp": "2025-07-26T00:00:35.946983"
}