{
  "ptid_time": "057_S_1371_2007-10-03",
  "img_path": "/data/qiuhui/data/adni/images/057_S_1371/2007-10-03/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 43,386 mm³, 7.7% below the reference mean. With a Z-score of -0.22 (41.1th percentile), this represents normal volume ; whole brain volume measures 970,061 mm³, 5.7% below the reference mean. With a Z-score of -0.75 (22.6th percentile), this represents normal volume . ",
  "text_data": "Age is 84.7 years. Gender is Male. Education: 10 years. MMSE: 27.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "Reasoning: The brain volumes (ventricular and whole brain) are within normal ranges, and the MMSE score of 27 is above the typical cutoff for cognitive impairment (usually <24). However, age and APOE4 status are risk factors for cognitive decline.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to age and APOE4 status, despite normal imaging and MMSE)",
  "timestamp": "2025-07-26T08:11:36.202602"
}