{
  "ptid_time": "007_S_4488_2012-08-22",
  "img_path": "/data/qiuhui/data/adni/images/007_S_4488/2012-08-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,220 mm³, 37.1% below the reference mean. With a Z-score of -0.89 (18.7th percentile), this represents normal volume ; hippocampal volume measures 9,085 mm³, 20.2% above the reference mean. With a Z-score of 1.97 (97.6th percentile), this represents moderate enlargement; whole brain volume measures 1,193,010 mm³, 10.5% above the reference mean. With a Z-score of 1.37 (91.4th percentile), this represents mild enlargement; entorhinal cortex volume measures 5,095 mm³, 24.3% above the reference mean. With a Z-score of 1.64 (95.0th percentile), this represents moderate enlargement; fusiform gyrus volume measures 19,713 mm³, 4.6% above the reference mean. With a Z-score of 0.40 (65.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,095 mm³, 5.8% below the reference mean. With a Z-score of -0.52 (30.0th percentile), this represents normal volume . ",
  "text_data": "Age is 73.1 years. Gender is Male. Education: 18 years. MMSE: 28.0. MoCA: 24.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume data shows normal or above-average volumes in most regions, including the hippocampus, whole brain, and entorhinal cortex, which are typically affected in Alzheimer's disease. The MMSE score of 28 is within the normal range, and the MoCA score of 24 is borderline but not strongly indicative of cognitive impairment. The absence of APOE4 further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium",
  "timestamp": "2025-07-25T22:01:40.541293"
}