{
  "ptid_time": "109_S_1114_2007-07-23",
  "img_path": "/data/qiuhui/data/adni/images/109_S_1114/2007-07-23/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 29,151 mm³, 3.9% above the reference mean. With a Z-score of 0.09 (53.5th percentile), this represents normal volume ; whole brain volume measures 822,606 mm³, 15.6% below the reference mean. With a Z-score of -1.96 (2.5th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 78.8 years. Gender is Female. Education: 12 years. MMSE: 28.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The patient shows moderate whole brain atrophy (Z-score -1.96, 2.5th percentile) but normal ventricular volume. Despite this structural change, cognitive performance (MMSE 28) remains intact, and there is no APOE4 genetic risk factor.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (Brain atrophy is concerning, but preserved cognition and lack of genetic risk suggest no current impairment)",
  "timestamp": "2025-07-26T11:29:39.931475"
}