{
  "ptid_time": "002_S_1155_2010-01-07",
  "img_path": "/data/qiuhui/data/adni/images/002_S_1155/2010-01-07/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 43,565 mm³, 45.1% above the reference mean. With a Z-score of 1.07 (85.8th percentile), this represents mild enlargement; hippocampal volume measures 8,706 mm³, 8.5% above the reference mean. With a Z-score of 0.85 (80.1th percentile), this represents normal volume ; whole brain volume measures 1,122,910 mm³, 1.0% below the reference mean. With a Z-score of -0.15 (44.2th percentile), this represents normal volume ; entorhinal cortex volume measures 3,695 mm³, 13.3% below the reference mean. With a Z-score of -0.92 (17.8th percentile), this represents normal volume ; fusiform gyrus volume measures 21,531 mm³, 8.1% above the reference mean. With a Z-score of 0.68 (75.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,373 mm³, 0.2% below the reference mean. With a Z-score of -0.01 (49.4th percentile), this represents normal volume . ",
  "text_data": "Age is 60.8 years. Gender is Male. Education: 20 years. MMSE: 28.0. Logical Memory: 9.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume shows mild enlargement (45.1% above mean, Z-score 1.07), which can be associated with atrophy, but hippocampal and whole brain volumes are within normal ranges. The entorhinal cortex is slightly reduced (13.3% below mean, Z-score -0.92), but not severely atrophic. MMSE is normal (28/30), and APOE4 is negative, reducing Alzheimer’s risk.  \n\n**Diagnosis:** Cognitively Normal (CN)  \n**Confidence:** Medium (ventricular enlargement warrants monitoring, but no strong evidence of MCI/dementia)",
  "timestamp": "2025-07-25T20:11:11.306624"
}