{
  "ptid_time": "029_S_0845_2007-04-02",
  "img_path": "/data/qiuhui/data/adni/images/029_S_0845/2007-04-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 122,514 mm³, 160.6% above the reference mean. With a Z-score of 4.66 (100.0th percentile), this represents profound enlargement; hippocampal volume measures 5,696 mm³, 18.3% below the reference mean. With a Z-score of -1.58 (5.7th percentile), this represents moderate atrophy; whole brain volume measures 1,070,130 mm³, 4.0% above the reference mean. With a Z-score of 0.52 (69.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,714 mm³, 6.4% below the reference mean. With a Z-score of -0.42 (33.7th percentile), this represents normal volume ; fusiform gyrus volume measures 17,384 mm³, 3.8% below the reference mean. With a Z-score of -0.33 (37.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,887 mm³, 1.4% below the reference mean. With a Z-score of -0.13 (45.0th percentile), this represents normal volume . ",
  "text_data": "Age is 80.8 years. Gender is Male. Education: 16 years. MMSE: 30.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The data shows profound ventricular enlargement (Z-score 4.66) and moderate hippocampal atrophy (Z-score -1.58), both of which are strong biomarkers for neurodegeneration, particularly Alzheimer's disease. However, the MMSE score of 30 (normal) and preserved whole brain and other regional volumes suggest no significant cognitive impairment at present.  \n**Diagnosis:** **MCI** (given structural changes but intact cognition, likely preclinical or very early stage)  \n**Confidence:** **Medium** (high confidence in structural abnormalities, but clinical correlation is needed due to normal MMSE)",
  "timestamp": "2025-07-26T04:17:45.194912"
}