{
  "ptid_time": "018_S_0450_2006-12-08",
  "img_path": "/data/qiuhui/data/adni/images/018_S_0450/2006-12-08/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 35,483 mm³, 18.2% above the reference mean. With a Z-score of 0.43 (66.7th percentile), this represents normal volume ; whole brain volume measures 1,085,000 mm³, 4.4% below the reference mean. With a Z-score of -0.62 (26.8th percentile), this represents normal volume . ",
  "text_data": "Age is 68.9 years. Gender is Male. Education: 20 years. MMSE: 28.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is slightly above the reference mean but still within normal range (Z-score 0.43), while whole brain volume is slightly below the reference mean but also normal (Z-score -0.62). The MMSE score of 28 is within the normal range, and there are no clear indicators of cognitive impairment or dementia.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to normal imaging and MMSE, but APOE4 carrier status introduces some uncertainty regarding future risk)",
  "timestamp": "2025-07-26T00:50:31.913190"
}