{
  "ptid_time": "041_S_0679_2007-08-13",
  "img_path": "/data/qiuhui/data/adni/images/041_S_0679/2007-08-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 16,690 mm³, 44.4% below the reference mean. With a Z-score of -1.06 (14.6th percentile), this represents mild atrophy; hippocampal volume measures 8,125 mm³, 1.2% above the reference mean. With a Z-score of 0.12 (54.9th percentile), this represents normal volume ; whole brain volume measures 1,175,570 mm³, 3.6% above the reference mean. With a Z-score of 0.51 (69.6th percentile), this represents normal volume ; entorhinal cortex volume measures 4,867 mm³, 14.2% above the reference mean. With a Z-score of 0.98 (83.7th percentile), this represents normal volume ; fusiform gyrus volume measures 17,947 mm³, 9.9% below the reference mean. With a Z-score of -0.82 (20.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,426 mm³, 4.5% above the reference mean. With a Z-score of 0.37 (64.5th percentile), this represents normal volume . ",
  "text_data": "Age is 63.9 years. Gender is Male. Education: 18 years. MMSE: 30.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. Biomarker levels: Pittsburgh compound B: 1.31 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The brain imaging shows mild ventricular atrophy but otherwise normal volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, etc.). Cognitive testing (MMSE 30/30) is intact, and there is no genetic risk (APOE4 negative).  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T07:00:04.398044"
}