{
  "ptid_time": "072_S_0315_2006-11-16",
  "img_path": "/data/qiuhui/data/adni/images/072_S_0315/2006-11-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,853 mm³, 30.3% below the reference mean. With a Z-score of -0.73 (23.4th percentile), this represents normal volume ; hippocampal volume measures 8,381 mm³, 10.9% above the reference mean. With a Z-score of 1.06 (85.6th percentile), this represents mild enlargement; whole brain volume measures 1,141,680 mm³, 5.8% above the reference mean. With a Z-score of 0.75 (77.3th percentile), this represents normal volume ; entorhinal cortex volume measures 3,847 mm³, 6.2% below the reference mean. With a Z-score of -0.42 (33.7th percentile), this represents normal volume ; fusiform gyrus volume measures 16,073 mm³, 14.7% below the reference mean. With a Z-score of -1.25 (10.6th percentile), this represents mild atrophy; middle temporal gyrus volume measures 20,022 mm³, 6.2% below the reference mean. With a Z-score of -0.55 (29.0th percentile), this represents normal volume . ",
  "text_data": "Age is 72.0 years. Gender is Male. Education: 16 years. MMSE: 30.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mostly normal or mildly enlarged structures (e.g., hippocampus, whole brain), with only mild atrophy in the fusiform gyrus. The MMSE score of 30 is within the normal range, and the absence of APOE4 alleles reduces genetic risk. No significant cognitive or structural deficits are evident.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T09:07:14.934583"
}