{
  "ptid_time": "002_S_4270_2012-11-14",
  "img_path": "/data/qiuhui/data/adni/images/002_S_4270/2012-11-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 32,169 mm³, 14.6% above the reference mean. With a Z-score of 0.33 (63.1th percentile), this represents normal volume ; hippocampal volume measures 6,461 mm³, 9.2% below the reference mean. With a Z-score of -0.84 (20.0th percentile), this represents normal volume ; whole brain volume measures 1,049,230 mm³, 7.7% above the reference mean. With a Z-score of 0.96 (83.2th percentile), this represents normal volume ; entorhinal cortex volume measures 3,163 mm³, 13.9% below the reference mean. With a Z-score of -0.85 (19.7th percentile), this represents normal volume ; fusiform gyrus volume measures 19,642 mm³, 15.5% above the reference mean. With a Z-score of 1.41 (92.0th percentile), this represents mild enlargement; middle temporal gyrus volume measures 19,041 mm³, 0.7% below the reference mean. With a Z-score of -0.06 (47.7th percentile), this represents normal volume . ",
  "text_data": "Age is 75.6 years. Gender is Female. Education: 16 years. MMSE: 30.0. MoCA: 27.0. Logical Memory: 10.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal and entorhinal cortex volumes are slightly below the reference mean but still within the normal range (Z-scores > -1.0). Whole brain and fusiform gyrus volumes are above average, and cognitive scores (MMSE 30, MoCA 27) are intact. No significant atrophy or cognitive impairment is present.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T20:27:05.750093"
}