{
  "ptid_time": "010_S_0419_2007-06-27",
  "img_path": "/data/qiuhui/data/adni/images/010_S_0419/2007-06-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,468 mm³, 31.3% below the reference mean. With a Z-score of -0.75 (22.7th percentile), this represents normal volume ; hippocampal volume measures 11,041 mm³, 46.1% above the reference mean. With a Z-score of 4.49 (100.0th percentile), this represents profound enlargement; whole brain volume measures 1,118,530 mm³, 3.6% above the reference mean. With a Z-score of 0.47 (68.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,615 mm³, 12.5% above the reference mean. With a Z-score of 0.85 (80.3th percentile), this represents normal volume ; fusiform gyrus volume measures 19,856 mm³, 5.4% above the reference mean. With a Z-score of 0.46 (67.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,683 mm³, 6.3% above the reference mean. With a Z-score of 0.57 (71.4th percentile), this represents normal volume . ",
  "text_data": "Age is 71.2 years. Gender is Male. Education: 18 years. MMSE: 30.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. Biomarker levels: Pittsburgh compound B: 1.30 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measures, including hippocampal volume, are largely normal or above average, with no significant atrophy in key regions associated with Alzheimer's (e.g., hippocampus, entorhinal cortex). The MMSE score of 30 is perfect, and the absence of APOE4 further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-25T22:29:50.722085"
}