{
  "ptid_time": "137_S_4632_2012-12-17",
  "img_path": "/data/qiuhui/data/adni/images/137_S_4632/2012-12-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 42,888 mm³, 42.8% above the reference mean. With a Z-score of 1.02 (84.6th percentile), this represents mild enlargement; hippocampal volume measures 7,520 mm³, 6.3% below the reference mean. With a Z-score of -0.63 (26.4th percentile), this represents normal volume ; whole brain volume measures 1,165,170 mm³, 2.7% above the reference mean. With a Z-score of 0.38 (64.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,715 mm³, 10.6% above the reference mean. With a Z-score of 0.73 (76.9th percentile), this represents normal volume ; fusiform gyrus volume measures 20,729 mm³, 4.1% above the reference mean. With a Z-score of 0.34 (63.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,537 mm³, 5.0% above the reference mean. With a Z-score of 0.41 (66.0th percentile), this represents normal volume . ",
  "text_data": "Age is 68.2 years. Gender is Male. Education: 18 years. MMSE: 28.0. MoCA: 26.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is mildly enlarged (Z-score 1.02), but hippocampal volume is within normal limits (Z-score -0.63), and other brain regions show no significant atrophy. Cognitive scores (MMSE 28, MoCA 26) are normal, and there is no APOE4 genetic risk.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **High**",
  "timestamp": "2025-07-26T16:40:15.211286"
}