{
  "ptid_time": "014_S_0169_2009-02-23",
  "img_path": "/data/qiuhui/data/adni/images/014_S_0169/2009-02-23/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 44,663 mm³, 59.1% above the reference mean. With a Z-score of 1.35 (91.2th percentile), this represents mild enlargement; whole brain volume measures 1,013,120 mm³, 3.9% above the reference mean. With a Z-score of 0.50 (69.0th percentile), this represents normal volume . ",
  "text_data": "Age is 74.9 years. Gender is Female. Education: 16 years. MMSE: 27.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is mildly enlarged (59.1% above reference mean, Z-score 1.35), which can indicate atrophy, but whole brain volume is normal (Z-score 0.50). MMSE score of 27 is within the normal range (≥26), and APOE4 heterozygous status is a moderate risk factor. No clear cognitive impairment is evident.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to mild ventricular enlargement but normal MMSE and brain volume)",
  "timestamp": "2025-07-25T23:38:59.999697"
}