{
  "ptid_time": "128_S_0522_2007-06-22",
  "img_path": "/data/qiuhui/data/adni/images/128_S_0522/2007-06-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 50,009 mm³, 29.8% above the reference mean. With a Z-score of 0.71 (76.3th percentile), this represents normal volume ; hippocampal volume measures 7,413 mm³, 1.9% below the reference mean. With a Z-score of -0.19 (42.5th percentile), this represents normal volume ; whole brain volume measures 1,047,620 mm³, 2.9% below the reference mean. With a Z-score of -0.38 (35.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,952 mm³, 20.8% above the reference mean. With a Z-score of 1.41 (92.0th percentile), this represents mild enlargement; fusiform gyrus volume measures 16,834 mm³, 10.6% below the reference mean. With a Z-score of -0.91 (18.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,875 mm³, 2.5% above the reference mean. With a Z-score of 0.23 (58.9th percentile), this represents normal volume . ",
  "text_data": "Age is 70.9 years. Gender is Male. Education: 17 years. MMSE: 30.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures fall within normal ranges or show only mild deviations (e.g., mild enlargement in entorhinal cortex, slight reduction in fusiform gyrus). The MMSE score of 30 is optimal, and the absence of APOE4 further reduces Alzheimer's risk. No significant atrophy or cognitive impairment is evident.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T13:45:57.275409"
}