{
  "ptid_time": "009_S_0751_2007-02-21",
  "img_path": "/data/qiuhui/data/adni/images/009_S_0751/2007-02-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 83,675 mm³, 117.2% above the reference mean. With a Z-score of 2.81 (99.8th percentile), this represents significant enlargement; hippocampal volume measures 7,369 mm³, 2.5% below the reference mean. With a Z-score of -0.25 (40.3th percentile), this represents normal volume ; whole brain volume measures 1,049,830 mm³, 2.7% below the reference mean. With a Z-score of -0.36 (36.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,620 mm³, 11.7% below the reference mean. With a Z-score of -0.79 (21.3th percentile), this represents normal volume ; fusiform gyrus volume measures 18,847 mm³, 0.0% above the reference mean. With a Z-score of 0.00 (50.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,934 mm³, 1.9% below the reference mean. With a Z-score of -0.17 (43.2th percentile), this represents normal volume . ",
  "text_data": "Age is 71.4 years. Gender is Male. Education: 16 years. MMSE: 28.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is significantly enlarged (Z-score 2.81, 99.8th percentile), which is a strong indicator of neurodegeneration, while hippocampal and whole brain volumes are within normal ranges. The MMSE score of 28 is normal, and there is no APOE4 risk allele.  \nDiagnosis: **MCI** (due to significant ventricular enlargement suggesting early neurodegeneration, but preserved cognitive function)  \nConfidence: **Medium** (ventricular enlargement is concerning, but other structures and cognition are intact)",
  "timestamp": "2025-07-25T22:10:35.784857"
}