{
  "ptid_time": "020_S_6185_2019-01-16",
  "img_path": "/data/qiuhui/data/adni/images/020_S_6185/2019-01-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 37,426 mm³, 20.4% below the reference mean. With a Z-score of -0.59 (27.7th percentile), this represents normal volume ; hippocampal volume measures 7,366 mm³, 5.7% above the reference mean. With a Z-score of 0.49 (68.9th percentile), this represents normal volume ; whole brain volume measures 1,185,770 mm³, 15.2% above the reference mean. With a Z-score of 1.99 (97.7th percentile), this represents moderate enlargement; entorhinal cortex volume measures 4,820 mm³, 21.4% above the reference mean. With a Z-score of 1.40 (92.0th percentile), this represents mild enlargement; fusiform gyrus volume measures 22,549 mm³, 24.8% above the reference mean. With a Z-score of 2.15 (98.4th percentile), this represents significant enlargement; middle temporal gyrus volume measures 24,776 mm³, 22.8% above the reference mean. With a Z-score of 2.05 (98.0th percentile), this represents significant enlargement. ",
  "text_data": "Age is 83.7 years. Gender is Male. Education: 18 years. MMSE: 28.0. MoCA: 25.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements show normal or above-normal volumes in all regions, including the hippocampus, which is typically affected in Alzheimer's. Cognitive scores (MMSE 28, MoCA 25) are within normal limits for age, and there is no APOE4 risk allele.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T01:17:49.990046"
}