{
  "ptid_time": "041_S_5100_2017-07-31",
  "img_path": "/data/qiuhui/data/adni/images/041_S_5100/2017-07-31/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 66,033 mm³, 71.4% above the reference mean. With a Z-score of 1.71 (95.6th percentile), this represents moderate enlargement; hippocampal volume measures 8,188 mm³, 8.3% above the reference mean. With a Z-score of 0.81 (79.2th percentile), this represents normal volume ; whole brain volume measures 1,170,050 mm³, 8.4% above the reference mean. With a Z-score of 1.09 (86.2th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,352 mm³, 6.1% above the reference mean. With a Z-score of 0.42 (66.1th percentile), this represents normal volume ; fusiform gyrus volume measures 19,684 mm³, 4.5% above the reference mean. With a Z-score of 0.38 (64.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,377 mm³, 9.2% below the reference mean. With a Z-score of -0.83 (20.4th percentile), this represents normal volume . ",
  "text_data": "Age is 75.7 years. Gender is Male. Education: 16 years. MMSE: 29.0. MoCA: 28.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.02 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows moderate ventricular enlargement, which can be associated with atrophy, but hippocampal, entorhinal cortex, fusiform gyrus, and middle temporal gyrus volumes are within normal ranges. Cognitive testing (MMSE 29, MoCA 28) is intact, and amyloid PET (AV45) is normal, with no APOE4 risk alleles.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T07:26:24.983582"
}