{
  "ptid_time": "011_S_0023_2007-11-20",
  "img_path": "/data/qiuhui/data/adni/images/011_S_0023/2007-11-20/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 23,846 mm³, 38.1% below the reference mean. With a Z-score of -0.91 (18.1th percentile), this represents normal volume ; hippocampal volume measures 8,289 mm³, 9.7% above the reference mean. With a Z-score of 0.94 (82.7th percentile), this represents normal volume ; whole brain volume measures 1,031,610 mm³, 4.4% below the reference mean. With a Z-score of -0.57 (28.3th percentile), this represents normal volume ; entorhinal cortex volume measures 3,716 mm³, 9.4% below the reference mean. With a Z-score of -0.64 (26.2th percentile), this represents normal volume ; fusiform gyrus volume measures 18,654 mm³, 1.0% below the reference mean. With a Z-score of -0.08 (46.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,231 mm³, 9.9% below the reference mean. With a Z-score of -0.89 (18.7th percentile), this represents normal volume . ",
  "text_data": "Age is 73.7 years. Gender is Male. Education: 14 years. MMSE: 29.0. Logical Memory: 13.0. 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. The MMSE score of 29 is within the normal range (≥26), and there is no APOE4 genetic risk factor.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T22:41:56.644091"
}