{
  "ptid_time": "126_S_0605_2010-06-29",
  "img_path": "/data/qiuhui/data/adni/images/126_S_0605/2010-06-29/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 42,835 mm³, 52.6% above the reference mean. With a Z-score of 1.20 (88.6th percentile), this represents mild enlargement; hippocampal volume measures 7,591 mm³, 6.7% above the reference mean. With a Z-score of 0.61 (73.0th percentile), this represents normal volume ; whole brain volume measures 1,114,420 mm³, 14.3% above the reference mean. With a Z-score of 1.81 (96.4th percentile), this represents moderate enlargement; entorhinal cortex volume measures 4,574 mm³, 24.5% above the reference mean. With a Z-score of 1.51 (93.4th percentile), this represents moderate enlargement; fusiform gyrus volume measures 18,150 mm³, 6.7% above the reference mean. With a Z-score of 0.61 (72.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,179 mm³, 10.5% above the reference mean. With a Z-score of 0.91 (81.9th percentile), this represents normal volume . ",
  "text_data": "Age is 79.6 years. Gender is Female. Education: 16 years. MMSE: 30.0. Logical Memory: 16.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mild ventricular enlargement but otherwise normal to above-average volumes in key regions (hippocampus, fusiform gyrus, middle temporal gyrus). The MMSE score of 30 is intact, and while APOE4 is a risk factor, there is no structural or cognitive evidence of impairment.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T12:36:24.984571"
}