{
  "ptid_time": "098_S_4018_2012-05-21",
  "img_path": "/data/qiuhui/data/adni/images/098_S_4018/2012-05-21/t1.nii.gz",
  "img_finding": "Image findings: hippocampal volume measures 7,782 mm³, 2.9% above the reference mean. With a Z-score of 0.29 (61.3th percentile), this represents normal volume ; whole brain volume measures 1,044,090 mm³, 3.3% below the reference mean. With a Z-score of -0.42 (33.6th percentile), this represents normal volume ; entorhinal cortex volume measures 3,687 mm³, 10.1% below the reference mean. With a Z-score of -0.68 (24.7th percentile), this represents normal volume ; fusiform gyrus volume measures 17,440 mm³, 7.4% below the reference mean. With a Z-score of -0.63 (26.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,909 mm³, 2.0% below the reference mean. With a Z-score of -0.18 (42.8th percentile), this represents normal volume . ",
  "text_data": "Age is 77.1 years. Gender is Male. Education: 18 years. MMSE: 27.0. MoCA: 28.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume is slightly above the reference mean, and other brain volumes (whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) are within normal ranges despite minor deviations. Cognitive scores (MMSE 27, MoCA 28) are intact, and there is no APOE4 genetic risk factor.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T10:46:24.607318"
}