{
  "ptid_time": "014_S_4080_2012-06-21",
  "img_path": "/data/qiuhui/data/adni/images/014_S_4080/2012-06-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 43,231 mm³, 54.0% above the reference mean. With a Z-score of 1.24 (89.2th percentile), this represents mild enlargement; hippocampal volume measures 6,761 mm³, 5.0% below the reference mean. With a Z-score of -0.46 (32.4th percentile), this represents normal volume ; whole brain volume measures 971,683 mm³, 0.3% below the reference mean. With a Z-score of -0.04 (48.5th percentile), this represents normal volume ; entorhinal cortex volume measures 4,667 mm³, 27.1% above the reference mean. With a Z-score of 1.66 (95.2th percentile), this represents moderate enlargement; fusiform gyrus volume measures 17,555 mm³, 3.2% above the reference mean. With a Z-score of 0.29 (61.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,646 mm³, 2.7% below the reference mean. With a Z-score of -0.24 (40.6th percentile), this represents normal volume . ",
  "text_data": "Age is 79.6 years. Gender is Female. Education: 16 years. MMSE: 28.0. MoCA: 26.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume is slightly below the reference mean but still within the normal range (Z-score -0.46), while ventricular enlargement is mild (Z-score 1.24). Cognitive scores (MMSE 28, MoCA 26) are within normal limits, and there is no APOE4 risk allele. The entorhinal cortex enlargement is atypical but not necessarily pathological.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (due to mild ventricular enlargement and atypical entorhinal cortex volume, but cognitive scores are strong and no other significant atrophy is present)",
  "timestamp": "2025-07-25T23:52:22.879429"
}