{
  "ptid_time": "114_S_6487_2020-12-04",
  "img_path": "/data/qiuhui/data/adni/images/114_S_6487/2020-12-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 29,097 mm³, 24.5% below the reference mean. With a Z-score of -0.59 (27.9th percentile), this represents normal volume ; hippocampal volume measures 7,114 mm³, 5.9% below the reference mean. With a Z-score of -0.57 (28.3th percentile), this represents normal volume ; whole brain volume measures 1,096,470 mm³, 1.6% above the reference mean. With a Z-score of 0.21 (58.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,634 mm³, 13.0% above the reference mean. With a Z-score of 0.88 (81.1th percentile), this represents normal volume ; fusiform gyrus volume measures 19,026 mm³, 1.0% above the reference mean. With a Z-score of 0.08 (53.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 24,005 mm³, 12.5% above the reference mean. With a Z-score of 1.12 (86.9th percentile), this represents mild enlargement. ",
  "text_data": "Age is 70.3 years. Gender is Male. Education: 20 years. MMSE: 28.0. MoCA: 27.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.03 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges or show mild enlargement, with no significant atrophy. Cognitive scores (MMSE 28, MoCA 27) are within normal limits, and amyloid PET (AV45) is normal. No APOE4 risk alleles are present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:50:21.686562"
}