{
  "ptid_time": "082_S_4224_2012-10-10",
  "img_path": "/data/qiuhui/data/adni/images/082_S_4224/2012-10-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 34,634 mm³, 10.1% below the reference mean. With a Z-score of -0.24 (40.5th percentile), this represents normal volume ; hippocampal volume measures 7,053 mm³, 6.7% below the reference mean. With a Z-score of -0.65 (25.7th percentile), this represents normal volume ; whole brain volume measures 1,103,040 mm³, 2.2% above the reference mean. With a Z-score of 0.28 (61.2th percentile), this represents normal volume ; entorhinal cortex volume measures 2,617 mm³, 36.2% below the reference mean. With a Z-score of -2.45 (0.7th percentile), this represents significant atrophy; fusiform gyrus volume measures 20,550 mm³, 9.1% above the reference mean. With a Z-score of 0.77 (78.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,815 mm³, 2.5% below the reference mean. With a Z-score of -0.22 (41.3th percentile), this represents normal volume . ",
  "text_data": "Age is 76.1 years. Gender is Male. Education: 20 years. MMSE: 30.0. MoCA: 28.0. Logical Memory: 10.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The entorhinal cortex shows significant atrophy (Z-score -2.45, 0.7th percentile), which is a strong biomarker for early Alzheimer's pathology. However, other brain volumes (hippocampus, whole brain, etc.) are within normal ranges, and cognitive scores (MMSE 30, MoCA 28) are intact, suggesting no functional impairment.  \nDiagnosis: **CN (Cognitively Normal)**  \nConfidence: **Medium** (Atrophy in the entorhinal cortex raises concern for preclinical AD, but normal cognition and other volumes support current normal status.)",
  "timestamp": "2025-07-26T10:06:05.258576"
}