{
  "ptid_time": "027_S_5093_2014-03-17",
  "img_path": "/data/qiuhui/data/adni/images/027_S_5093/2014-03-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 18,857 mm³, 32.8% below the reference mean. With a Z-score of -0.75 (22.6th percentile), this represents normal volume ; hippocampal volume measures 6,275 mm³, 11.8% below the reference mean. With a Z-score of -1.08 (14.0th percentile), this represents mild atrophy; whole brain volume measures 1,045,050 mm³, 7.2% above the reference mean. With a Z-score of 0.91 (81.8th percentile), this represents normal volume . ",
  "text_data": "Age is 70.3 years. Gender is Female. Education: 19 years. MMSE: 29.0. MoCA: 30.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The hippocampal volume shows mild atrophy (Z-score -1.08, 14th percentile), but ventricular and whole brain volumes are normal. Cognitive scores (MMSE 29, MoCA 30) are intact, and there is no APOE4 risk allele.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (mild hippocampal atrophy could be age-related, but cognitive performance remains strong)",
  "timestamp": "2025-07-26T04:07:24.585517"
}