{
  "ptid_time": "128_S_0230_2006-10-17",
  "img_path": "/data/qiuhui/data/adni/images/128_S_0230/2006-10-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 39,867 mm³, 15.2% below the reference mean. With a Z-score of -0.44 (32.9th percentile), this represents normal volume ; hippocampal volume measures 5,888 mm³, 15.5% below the reference mean. With a Z-score of -1.34 (9.0th percentile), this represents mild atrophy; whole brain volume measures 1,076,940 mm³, 4.6% above the reference mean. With a Z-score of 0.61 (72.9th percentile), this represents normal volume ; entorhinal cortex volume measures 2,295 mm³, 42.2% below the reference mean. With a Z-score of -2.76 (0.3th percentile), this represents significant atrophy; fusiform gyrus volume measures 16,664 mm³, 7.8% below the reference mean. With a Z-score of -0.67 (25.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,834 mm³, 13.2% above the reference mean. With a Z-score of 1.18 (88.2th percentile), this represents mild enlargement. ",
  "text_data": "Age is 80.5 years. Gender is Male. Education: 20 years. MMSE: 28.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The patient shows significant atrophy in the entorhinal cortex (Z-score -2.76, 0.3rd percentile) and mild hippocampal atrophy (Z-score -1.34, 9th percentile), both key regions in Alzheimer's pathology. However, MMSE is normal (28/30), and other brain volumes are largely within normal ranges, suggesting preserved cognitive function despite structural changes.  \n\nDiagnosis: **MCI** (due to significant entorhinal atrophy and mild hippocampal atrophy, but no clear cognitive impairment yet)  \nConfidence: **Medium** (structural changes are concerning, but cognitive performance remains intact, and APOE4-negative status reduces Alzheimer's risk)",
  "timestamp": "2025-07-26T13:41:23.297661"
}