{
  "ptid_time": "033_S_6572_2019-09-26",
  "img_path": "/data/qiuhui/data/adni/images/033_S_6572/2019-09-26/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 25,142 mm³, 12.6% above the reference mean. With a Z-score of 0.31 (62.3th percentile), this represents normal volume ; hippocampal volume measures 8,914 mm³, 16.0% above the reference mean. With a Z-score of 1.80 (96.4th percentile), this represents moderate enlargement; whole brain volume measures 1,115,880 mm³, 8.4% above the reference mean. With a Z-score of 1.05 (85.3th percentile), this represents mild enlargement; entorhinal cortex volume measures 5,813 mm³, 49.3% above the reference mean. With a Z-score of 3.82 (100.0th percentile), this represents profound enlargement; fusiform gyrus volume measures 19,579 mm³, 7.5% above the reference mean. With a Z-score of 0.85 (80.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,370 mm³, 10.5% below the reference mean. With a Z-score of -0.93 (17.6th percentile), this represents normal volume . ",
  "text_data": "Age is 68.9 years. Gender is Female. Education: 13 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume data shows no significant atrophy in key regions typically affected in Alzheimer's disease (e.g., hippocampus, entorhinal cortex, and fusiform gyrus are all above the reference mean). Cognitive scores (MMSE 30, MoCA 29) are in the normal range, and the absence of APOE4 further reduces Alzheimer's risk. The only notable finding is mild enlargement in some regions, which is not indicative of neurodegeneration.  \n\nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T05:40:58.181860"
}