{
  "ptid_time": "003_S_4900_2013-08-16",
  "img_path": "/data/qiuhui/data/adni/images/003_S_4900/2013-08-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 11,195 mm³, 49.9% below the reference mean. With a Z-score of -1.25 (10.6th percentile), this represents mild atrophy; hippocampal volume measures 7,386 mm³, 3.9% below the reference mean. With a Z-score of -0.44 (33.1th percentile), this represents normal volume ; whole brain volume measures 994,593 mm³, 3.4% below the reference mean. With a Z-score of -0.42 (33.8th percentile), this represents normal volume . ",
  "text_data": "Age is 60.8 years. Gender is Female. Education: 18 years. MMSE: 29.0. MoCA: 29.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume shows mild atrophy (Z-score -1.25), but hippocampal and whole brain volumes are within normal ranges (Z-scores -0.44 and -0.42, respectively). Cognitive scores (MMSE 29, MoCA 29) are intact, and there is no APOE4 risk allele.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **High**",
  "timestamp": "2025-07-25T20:57:19.560689"
}