{
  "ptid_time": "099_S_0090_2007-02-05",
  "img_path": "/data/qiuhui/data/adni/images/099_S_0090/2007-02-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 29,138 mm³, 24.4% below the reference mean. With a Z-score of -0.58 (28.0th percentile), this represents normal volume ; hippocampal volume measures 7,286 mm³, 3.6% below the reference mean. With a Z-score of -0.35 (36.2th percentile), this represents normal volume ; whole brain volume measures 995,336 mm³, 7.8% below the reference mean. With a Z-score of -1.01 (15.6th percentile), this represents mild atrophy; entorhinal cortex volume measures 4,115 mm³, 0.4% above the reference mean. With a Z-score of 0.02 (51.0th percentile), this represents normal volume ; fusiform gyrus volume measures 12,681 mm³, 32.7% below the reference mean. With a Z-score of -2.78 (0.3th percentile), this represents significant atrophy; middle temporal gyrus volume measures 19,866 mm³, 6.9% below the reference mean. With a Z-score of -0.62 (26.7th percentile), this represents normal volume . ",
  "text_data": "Age is 70.8 years. Gender is Male. Education: 20 years. MMSE: 30.0. Logical Memory: 16.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The patient shows significant atrophy in the fusiform gyrus (Z-score -2.78, 0.3rd percentile) and mild whole brain atrophy (Z-score -1.01, 15.6th percentile), but hippocampal and other key regions are within normal ranges. Despite these structural changes, cognitive performance (MMSE 30/30) remains intact, and there are no reported functional impairments.  \nDiagnosis: **CN (Cognitively Normal)**  \nConfidence: **Medium** (Structural changes are notable but not yet clinically significant given preserved cognition; APOE4 homozygosity increases future risk but does not alter current diagnosis.)",
  "timestamp": "2025-07-26T10:52:52.626354"
}