{
  "ptid_time": "035_S_4464_2018-02-01",
  "img_path": "/data/qiuhui/data/adni/images/035_S_4464/2018-02-01/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,327 mm³, 5.7% below the reference mean. With a Z-score of -0.14 (44.6th percentile), this represents normal volume ; hippocampal volume measures 8,757 mm³, 15.8% above the reference mean. With a Z-score of 1.55 (93.9th percentile), this represents moderate enlargement; whole brain volume measures 1,047,570 mm³, 2.9% below the reference mean. With a Z-score of -0.38 (35.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,187 mm³, 2.1% above the reference mean. With a Z-score of 0.14 (55.7th percentile), this represents normal volume ; fusiform gyrus volume measures 20,450 mm³, 8.6% above the reference mean. With a Z-score of 0.73 (76.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 24,645 mm³, 15.5% above the reference mean. With a Z-score of 1.39 (91.8th percentile), this represents mild enlargement. ",
  "text_data": "Age is 76.4 years. Gender is Male. Education: 16 years. MMSE: 29.0. MoCA: 28.0. Logical Memory: 18.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.15 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or above-average volumes in key regions, including the hippocampus, entorhinal cortex, and temporal structures, with no significant atrophy. Cognitive scores (MMSE 29, MoCA 28) are within the normal range, and amyloid PET (AV45) is normal. APOE4 carrier status alone does not indicate pathology without other biomarkers.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T05:57:27.391013"
}