{
  "ptid_time": "123_S_0094_2006-06-26",
  "img_path": "/data/qiuhui/data/adni/images/123_S_0094/2006-06-26/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 57,506 mm³, 104.9% above the reference mean. With a Z-score of 2.40 (99.2th percentile), this represents significant enlargement; hippocampal volume measures 4,924 mm³, 30.8% below the reference mean. With a Z-score of -2.82 (0.2th percentile), this represents significant atrophy; whole brain volume measures 951,923 mm³, 2.3% below the reference mean. With a Z-score of -0.29 (38.5th percentile), this represents normal volume ; entorhinal cortex volume measures 2,341 mm³, 36.3% below the reference mean. With a Z-score of -2.23 (1.3th percentile), this represents significant atrophy; fusiform gyrus volume measures 11,184 mm³, 34.3% below the reference mean. With a Z-score of -3.12 (0.1th percentile), this represents profound atrophy; middle temporal gyrus volume measures 12,866 mm³, 32.9% below the reference mean. With a Z-score of -2.85 (0.2th percentile), this represents significant atrophy. ",
  "text_data": "Age is 71.2 years. Gender is Female. Education: 14 years. MMSE: 20.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The data shows significant atrophy in key Alzheimer's-related regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus) alongside ventricular enlargement, consistent with neurodegeneration. The MMSE score of 20 indicates cognitive impairment, and the presence of one APOE4 allele increases Alzheimer's risk.  \n\n**Diagnosis:** Dementia (likely Alzheimer’s disease)  \n**Confidence:** High",
  "timestamp": "2025-07-26T12:23:02.673657"
}