{
  "ptid_time": "010_S_0419_2006-05-16",
  "img_path": "/data/qiuhui/data/adni/images/010_S_0419/2006-05-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 25,428 mm³, 34.0% below the reference mean. With a Z-score of -0.81 (20.8th percentile), this represents normal volume ; hippocampal volume measures 10,769 mm³, 42.5% above the reference mean. With a Z-score of 4.14 (100.0th percentile), this represents profound enlargement; whole brain volume measures 1,132,010 mm³, 4.9% above the reference mean. With a Z-score of 0.63 (73.7th percentile), this represents normal volume ; entorhinal cortex volume measures 4,462 mm³, 8.8% above the reference mean. With a Z-score of 0.60 (72.5th percentile), this represents normal volume ; fusiform gyrus volume measures 20,011 mm³, 6.2% above the reference mean. With a Z-score of 0.53 (70.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,605 mm³, 5.9% above the reference mean. With a Z-score of 0.53 (70.3th percentile), this represents normal volume . ",
  "text_data": "Age is 70.2 years. Gender is Male. Education: 18 years. MMSE: 30.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows normal or above-normal measurements across all regions, including a profoundly enlarged hippocampus. The MMSE score of 30 (perfect) and absence of APOE4 alleles further support no cognitive impairment.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T22:29:33.843523"
}