{
  "ptid_time": "009_S_5125_2014-04-07",
  "img_path": "/data/qiuhui/data/adni/images/009_S_5125/2014-04-07/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 39,181 mm³, 75.4% above the reference mean. With a Z-score of 1.89 (97.0th percentile), this represents moderate enlargement; hippocampal volume measures 7,517 mm³, 2.2% below the reference mean. With a Z-score of -0.24 (40.3th percentile), this represents normal volume ; whole brain volume measures 1,078,020 mm³, 4.7% above the reference mean. With a Z-score of 0.59 (72.3th percentile), this represents normal volume ; entorhinal cortex volume measures 4,081 mm³, 4.8% above the reference mean. With a Z-score of 0.37 (64.6th percentile), this represents normal volume ; fusiform gyrus volume measures 18,215 mm³, 0.0% above the reference mean. With a Z-score of 0.00 (50.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,219 mm³, 13.2% above the reference mean. With a Z-score of 1.17 (87.9th percentile), this represents mild enlargement. ",
  "text_data": "Age is 66.2 years. Gender is Female. Education: 12 years. MMSE: 30.0. MoCA: 28.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume shows moderate enlargement (Z-score 1.89, 97th percentile), which can be indicative of atrophy, but hippocampal volume is normal (Z-score -0.24, 40.3rd percentile). Cognitive scores (MMSE 30, MoCA 28) are within normal range, and there is no APOE4 risk allele.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (Ventricular enlargement raises some concern, but preserved hippocampal volume and intact cognition support normal aging rather than MCI/dementia.)",
  "timestamp": "2025-07-25T22:27:02.456793"
}