{
  "ptid_time": "128_S_4607_2018-07-09",
  "img_path": "/data/qiuhui/data/adni/images/128_S_4607/2018-07-09/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,293 mm³, 0.2% below the reference mean. With a Z-score of -0.00 (49.8th percentile), this represents normal volume ; hippocampal volume measures 7,833 mm³, 1.9% above the reference mean. With a Z-score of 0.22 (58.6th percentile), this represents normal volume ; whole brain volume measures 1,080,600 mm³, 5.0% above the reference mean. With a Z-score of 0.62 (73.3th percentile), this represents normal volume ; entorhinal cortex volume measures 4,274 mm³, 9.8% above the reference mean. With a Z-score of 0.76 (77.6th percentile), this represents normal volume ; fusiform gyrus volume measures 21,422 mm³, 17.6% above the reference mean. With a Z-score of 1.99 (97.6th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 23,713 mm³, 15.6% above the reference mean. With a Z-score of 1.38 (91.7th percentile), this represents mild enlargement. ",
  "text_data": "Age is 62.2 years. Gender is Female. Education: 20 years. MMSE: 29.0. MoCA: 28.0. Logical Memory: 14.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 0.97 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) are within normal ranges or show mild/moderate enlargement, with no significant atrophy. Cognitive scores (MMSE 29, MoCA 28) are normal, and amyloid PET (AV45) is negative. APOE4 carrier status alone does not indicate pathology without other biomarkers.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T14:03:09.012418"
}