{
  "ptid_time": "135_S_6104_2018-11-08",
  "img_path": "/data/qiuhui/data/adni/images/135_S_6104/2018-11-08/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,230 mm³, 42.3% below the reference mean. With a Z-score of -1.01 (15.6th percentile), this represents mild atrophy; hippocampal volume measures 8,230 mm³, 8.9% above the reference mean. With a Z-score of 0.87 (80.7th percentile), this represents normal volume ; whole brain volume measures 1,151,910 mm³, 6.7% above the reference mean. With a Z-score of 0.87 (80.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,540 mm³, 10.7% above the reference mean. With a Z-score of 0.73 (76.6th percentile), this represents normal volume ; fusiform gyrus volume measures 21,788 mm³, 15.7% above the reference mean. With a Z-score of 1.33 (90.9th percentile), this represents mild enlargement; middle temporal gyrus volume measures 22,397 mm³, 5.0% above the reference mean. With a Z-score of 0.45 (67.2th percentile), this represents normal volume . ",
  "text_data": "Age is 70.0 years. Gender is Male. Education: 20 years. MMSE: 30.0. MoCA: 30.0. Logical Memory: 12.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain imaging shows mild ventricular atrophy but otherwise normal or even slightly enlarged volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus). Cognitive scores (MMSE 30, MoCA 30) are intact, and while APOE4 is present, there are no clinical or structural signs of impairment.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T15:49:03.515155"
}