{
  "ptid_time": "068_S_4174_2012-10-29",
  "img_path": "/data/qiuhui/data/adni/images/068_S_4174/2012-10-29/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 14,509 mm³, 48.3% below the reference mean. With a Z-score of -1.11 (13.4th percentile), this represents mild atrophy; hippocampal volume measures 8,266 mm³, 16.2% above the reference mean. With a Z-score of 1.48 (93.1th percentile), this represents mild enlargement; whole brain volume measures 1,025,040 mm³, 5.2% above the reference mean. With a Z-score of 0.65 (74.2th percentile), this represents normal volume ; entorhinal cortex volume measures 3,529 mm³, 3.9% below the reference mean. With a Z-score of -0.24 (40.5th percentile), this represents normal volume ; fusiform gyrus volume measures 17,311 mm³, 1.8% above the reference mean. With a Z-score of 0.16 (56.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,944 mm³, 4.0% above the reference mean. With a Z-score of 0.35 (63.7th percentile), this represents normal volume . ",
  "text_data": "Age is 74.7 years. Gender is Female. Education: 18 years. MMSE: 29.0. MoCA: 28.0. Logical Memory: 16.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mild ventricular enlargement (suggesting mild atrophy) but otherwise normal or above-average volumes in key regions (hippocampus, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus). Cognitive scores (MMSE 29, MoCA 28) are within the normal range, and APOE4 status (heterozygous) does not strongly indicate imminent decline.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **High**  \n\n(No significant structural or cognitive deficits align with MCI or dementia at this time.)",
  "timestamp": "2025-07-26T09:00:12.094252"
}