{
  "ptid_time": "041_S_4874_2019-08-15",
  "img_path": "/data/qiuhui/data/adni/images/041_S_4874/2019-08-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,250 mm³, 13.8% below the reference mean. With a Z-score of -0.35 (36.5th percentile), this represents normal volume ; hippocampal volume measures 8,043 mm³, 4.7% above the reference mean. With a Z-score of 0.52 (70.0th percentile), this represents normal volume ; whole brain volume measures 1,014,270 mm³, 1.4% below the reference mean. With a Z-score of -0.18 (42.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,078 mm³, 4.8% above the reference mean. With a Z-score of 0.37 (64.4th percentile), this represents normal volume ; fusiform gyrus volume measures 17,134 mm³, 5.9% below the reference mean. With a Z-score of -0.67 (25.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,778 mm³, 3.6% below the reference mean. With a Z-score of -0.32 (37.4th percentile), this represents normal volume . ",
  "text_data": "Age is 64.7 years. Gender is Female. Education: 18 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 14.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.05 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 based on Z-scores and percentiles. Cognitive assessments (MMSE: 30, MoCA: 29) are intact, and amyloid PET (AV45) is normal. The presence of one APOE4 allele does not override the absence of structural or functional deficits.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T07:20:50.424639"
}