{
  "ptid_time": "022_S_0014_2008-11-05",
  "img_path": "/data/qiuhui/data/adni/images/022_S_0014/2008-11-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 53,106 mm³, 43.7% above the reference mean. With a Z-score of 1.18 (88.1th percentile), this represents mild enlargement; hippocampal volume measures 6,520 mm³, 0.4% above the reference mean. With a Z-score of 0.03 (51.2th percentile), this represents normal volume ; whole brain volume measures 825,535 mm³, 11.1% below the reference mean. With a Z-score of -1.33 (9.2th percentile), this represents mild atrophy; entorhinal cortex volume measures 3,266 mm³, 5.7% below the reference mean. With a Z-score of -0.31 (38.0th percentile), this represents normal volume ; fusiform gyrus volume measures 12,522 mm³, 22.3% below the reference mean. With a Z-score of -1.67 (4.7th percentile), this represents moderate atrophy; middle temporal gyrus volume measures 16,607 mm³, 7.9% below the reference mean. With a Z-score of -0.70 (24.1th percentile), this represents normal volume . ",
  "text_data": "Age is 81.5 years. Gender is Female. Education: 12 years. MMSE: 29.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The data shows mild ventricular enlargement and mild whole-brain atrophy, with moderate atrophy in the fusiform gyrus, but hippocampal and entorhinal cortex volumes are within normal ranges. The MMSE score of 29 is normal, and the absence of APOE4 reduces genetic risk.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (due to some atrophy but no significant cognitive impairment or biomarker evidence of neurodegeneration)",
  "timestamp": "2025-07-26T01:58:45.882389"
}