{
  "ptid_time": "037_S_6271_2018-05-17",
  "img_path": "/data/qiuhui/data/adni/images/037_S_6271/2018-05-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,874 mm³, 6.5% below the reference mean. With a Z-score of -0.16 (43.5th percentile), this represents normal volume ; hippocampal volume measures 9,279 mm³, 20.7% above the reference mean. With a Z-score of 2.33 (99.0th percentile), this represents significant enlargement; whole brain volume measures 1,136,020 mm³, 10.4% above the reference mean. With a Z-score of 1.29 (90.2th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,411 mm³, 13.3% above the reference mean. With a Z-score of 1.03 (84.9th percentile), this represents mild enlargement; fusiform gyrus volume measures 19,093 mm³, 4.8% above the reference mean. With a Z-score of 0.55 (70.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,574 mm³, 14.9% above the reference mean. With a Z-score of 1.32 (90.7th percentile), this represents mild enlargement. ",
  "text_data": "Age is 62.0 years. Gender is Female. Education: 15 years. MMSE: 29.0. MoCA: 26.0. Logical Memory: 9.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 0.96 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows no atrophy in key regions (hippocampus, entorhinal cortex, middle temporal gyrus are enlarged or normal), and cognitive scores (MMSE 29, MoCA 26) are within normal ranges. The absence of APOE4 further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T06:55:03.578133"
}