{
  "ptid_time": "033_S_1098_2007-06-06",
  "img_path": "/data/qiuhui/data/adni/images/033_S_1098/2007-06-06/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 16,260 mm³, 42.1% below the reference mean. With a Z-score of -0.96 (16.8th percentile), this represents normal volume ; hippocampal volume measures 7,288 mm³, 2.4% above the reference mean. With a Z-score of 0.22 (58.8th percentile), this represents normal volume ; whole brain volume measures 921,555 mm³, 5.4% below the reference mean. With a Z-score of -0.69 (24.6th percentile), this represents normal volume ; entorhinal cortex volume measures 4,261 mm³, 16.0% above the reference mean. With a Z-score of 0.98 (83.7th percentile), this represents normal volume ; fusiform gyrus volume measures 18,634 mm³, 9.5% above the reference mean. With a Z-score of 0.87 (80.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,366 mm³, 9.4% below the reference mean. With a Z-score of -0.82 (20.7th percentile), this represents normal volume . ",
  "text_data": "Age is 72.5 years. Gender is Female. Education: 15 years. MMSE: 29.0. APOEε4 alleles: 1.0. ",
  "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 significant atrophy or structural abnormality suggestive of cognitive decline.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T05:28:30.971220"
}