{
  "ptid_time": "007_S_4637_2013-04-22",
  "img_path": "/data/qiuhui/data/adni/images/007_S_4637/2013-04-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 27,070 mm³, 3.6% below the reference mean. With a Z-score of -0.08 (46.8th percentile), this represents normal volume ; hippocampal volume measures 6,511 mm³, 8.5% below the reference mean. With a Z-score of -0.78 (21.8th percentile), this represents normal volume ; whole brain volume measures 977,413 mm³, 0.3% above the reference mean. With a Z-score of 0.04 (51.4th percentile), this represents normal volume ; entorhinal cortex volume measures 3,619 mm³, 1.5% below the reference mean. With a Z-score of -0.09 (46.4th percentile), this represents normal volume ; fusiform gyrus volume measures 16,857 mm³, 0.9% below the reference mean. With a Z-score of -0.08 (46.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,327 mm³, 4.4% below the reference mean. With a Z-score of -0.38 (35.1th percentile), this represents normal volume . ",
  "text_data": "Age is 71.8 years. Gender is Female. Education: 18 years. MMSE: 29.0. MoCA: 29.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. ",
  "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 scores (MMSE and MoCA) are both 29/30, indicating no significant cognitive impairment. The absence of APOE4 further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-25T22:05:47.478962"
}