{
  "ptid_time": "051_S_1331_2008-05-07",
  "img_path": "/data/qiuhui/data/adni/images/051_S_1331/2008-05-07/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 34,522 mm³, 23.0% above the reference mean. With a Z-score of 0.53 (70.1th percentile), this represents normal volume ; whole brain volume measures 826,867 mm³, 15.2% below the reference mean. With a Z-score of -1.91 (2.8th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 77.5 years. Gender is Female. Education: 11 years. MMSE: 28.0. Logical Memory: 1.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "Reasoning: The patient shows moderate whole brain atrophy (Z-score -1.91, 2.8th 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 (Structural atrophy without cognitive decline suggests possible preclinical changes, but current clinical presentation is normal.)",
  "timestamp": "2025-07-26T07:36:15.143621"
}