{
  "ptid_time": "024_S_6385_2020-11-12",
  "img_path": "/data/qiuhui/data/adni/images/024_S_6385/2020-11-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 30,477 mm³, 36.4% above the reference mean. With a Z-score of 0.91 (81.9th percentile), this represents normal volume ; hippocampal volume measures 8,984 mm³, 16.9% above the reference mean. With a Z-score of 1.90 (97.1th percentile), this represents moderate enlargement; whole brain volume measures 1,235,920 mm³, 20.1% above the reference mean. With a Z-score of 2.50 (99.4th percentile), this represents significant enlargement; entorhinal cortex volume measures 6,141 mm³, 57.7% above the reference mean. With a Z-score of 4.47 (100.0th percentile), this represents profound enlargement; fusiform gyrus volume measures 23,331 mm³, 28.1% above the reference mean. With a Z-score of 3.17 (99.9th percentile), this represents profound enlargement; middle temporal gyrus volume measures 20,063 mm³, 2.2% below the reference mean. With a Z-score of -0.20 (42.2th percentile), this represents normal volume . ",
  "text_data": "Age is 69.1 years. Gender is Female. Education: 16 years. MMSE: 29.0. MoCA: 28.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 0.99 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume data shows significant to profound enlargement in most regions (hippocampus, whole brain, entorhinal cortex, fusiform gyrus), which is atypical for Alzheimer's. Cognitive scores (MMSE 29, MoCA 28) are in the normal range, and APOE4 is negative.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T03:25:25.308920"
}