{
  "ptid_time": "022_S_6069_2017-08-22",
  "img_path": "/data/qiuhui/data/adni/images/022_S_6069/2017-08-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,217 mm³, 0.5% above the reference mean. With a Z-score of 0.01 (50.5th percentile), this represents normal volume ; hippocampal volume measures 8,628 mm³, 21.3% above the reference mean. With a Z-score of 1.95 (97.4th percentile), this represents moderate enlargement; whole brain volume measures 1,132,130 mm³, 16.2% above the reference mean. With a Z-score of 2.03 (97.9th percentile), this represents significant enlargement; entorhinal cortex volume measures 5,243 mm³, 42.7% above the reference mean. With a Z-score of 2.62 (99.6th percentile), this represents significant enlargement; fusiform gyrus volume measures 18,786 mm³, 10.4% above the reference mean. With a Z-score of 0.95 (82.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,749 mm³, 8.2% above the reference mean. With a Z-score of 0.72 (76.3th percentile), this represents normal volume . ",
  "text_data": "Age is 73.6 years. Gender is Female. Education: 18 years. Handedness: Right. Race: White. MMSE: 29.0. MoCA: 26.0. Logical Memory: 17.0. APOEε4 alleles: 1.0. Biomarker levels: Flobetaben (FBB): 1.54 SUVR (profound elevated). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume data shows significant enlargement in multiple regions (hippocampus, whole brain, entorhinal cortex) well above reference means, which is atypical for Alzheimer's pathology. Cognitive scores (MMSE 29, MoCA 26) are in the normal range for age, and APOE4 heterozygous status does not override the lack of clinical or structural evidence of neurodegeneration.  \n\nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T02:23:48.214132"
}