{
  "ptid_time": "114_S_6429_2018-08-30",
  "img_path": "/data/qiuhui/data/adni/images/114_S_6429/2018-08-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,878 mm³, 11.4% above the reference mean. With a Z-score of 0.28 (61.2th percentile), this represents normal volume ; hippocampal volume measures 7,914 mm³, 3.0% above the reference mean. With a Z-score of 0.34 (63.1th percentile), this represents normal volume ; whole brain volume measures 998,446 mm³, 3.0% below the reference mean. With a Z-score of -0.37 (35.5th percentile), this represents normal volume ; entorhinal cortex volume measures 3,991 mm³, 2.5% above the reference mean. With a Z-score of 0.20 (57.7th percentile), this represents normal volume ; fusiform gyrus volume measures 17,179 mm³, 5.7% below the reference mean. With a Z-score of -0.64 (26.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,982 mm³, 12.4% below the reference mean. With a Z-score of -1.10 (13.6th percentile), this represents mild atrophy. ",
  "text_data": "Age is 68.8 years. Gender is Female. Education: 17 years. MMSE: 30.0. MoCA: 28.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.91 SUVR (mild reduced). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus) are within normal ranges except for mild atrophy in the middle temporal gyrus. Cognitive scores (MMSE 30, MoCA 28) are intact, and there is no significant amyloid burden (AV45: mild reduced). APOE4-negative status further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:49:45.247541"
}