{
  "ptid_time": "137_S_4299_2012-11-06",
  "img_path": "/data/qiuhui/data/adni/images/137_S_4299/2012-11-06/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 51,094 mm³, 82.0% above the reference mean. With a Z-score of 1.88 (97.0th percentile), this represents moderate enlargement; hippocampal volume measures 6,732 mm³, 5.4% below the reference mean. With a Z-score of -0.49 (31.1th percentile), this represents normal volume ; whole brain volume measures 980,413 mm³, 0.6% above the reference mean. With a Z-score of 0.07 (53.0th percentile), this represents normal volume . ",
  "text_data": "Age is 77.8 years. Gender is Female. Education: 12 years. MMSE: 29.0. MoCA: 26.0. Logical Memory: 9.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is moderately enlarged (82.0% above reference mean, Z-score 1.88), which can indicate atrophy, but hippocampal and whole brain volumes are within normal ranges. Cognitive scores (MMSE 29, MoCA 26) are strong, and there is no APOE4 risk allele.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (ventricular enlargement raises some concern, but cognitive performance and other biomarkers do not support MCI or dementia).",
  "timestamp": "2025-07-26T16:29:30.629247"
}