{
  "ptid_time": "021_S_4276_2019-04-15",
  "img_path": "/data/qiuhui/data/adni/images/021_S_4276/2019-04-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 33,048 mm³, 10.6% below the reference mean. With a Z-score of -0.29 (38.7th percentile), this represents normal volume ; hippocampal volume measures 6,526 mm³, 0.5% above the reference mean. With a Z-score of 0.04 (51.5th percentile), this represents normal volume ; whole brain volume measures 950,105 mm³, 2.4% above the reference mean. With a Z-score of 0.28 (61.2th percentile), this represents normal volume ; entorhinal cortex volume measures 4,268 mm³, 23.3% above the reference mean. With a Z-score of 1.26 (89.5th percentile), this represents mild enlargement; fusiform gyrus volume measures 16,964 mm³, 5.3% above the reference mean. With a Z-score of 0.40 (65.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,772 mm³, 7.0% below the reference mean. With a Z-score of -0.62 (26.7th percentile), this represents normal volume . ",
  "text_data": "Age is 81.4 years. Gender is Female. Education: 12 years. MMSE: 28.0. MoCA: 28.0. Logical Memory: 20.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 0.96 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, fusiform gyrus, middle temporal gyrus) are within normal ranges or mildly enlarged (entorhinal cortex). Cognitive scores (MMSE 28, MoCA 28) are intact, and amyloid PET (AV45) is normal. APOE4 carrier status does not override the absence of structural or functional deficits.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T01:43:53.324021"
}