{
  "ptid_time": "123_S_0390_2006-11-13",
  "img_path": "/data/qiuhui/data/adni/images/123_S_0390/2006-11-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 77,094 mm³, 64.0% above the reference mean. With a Z-score of 1.86 (96.8th percentile), this represents moderate enlargement; whole brain volume measures 1,002,740 mm³, 2.6% below the reference mean. With a Z-score of -0.34 (36.8th percentile), this represents normal volume . ",
  "text_data": "Age is 80.9 years. Gender is Male. Education: 16 years. MMSE: 29.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is moderately enlarged (64% above the reference mean, Z-score 1.86), which can indicate atrophy, but the whole brain volume is within normal limits (Z-score -0.34). The MMSE score of 29 is intact, and there is no clear cognitive impairment reported.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (ventricular enlargement raises some concern, but preserved cognition and normal brain volume suggest no significant impairment)",
  "timestamp": "2025-07-26T12:28:11.065913"
}