{
  "ptid_time": "116_S_0382_2006-11-30",
  "img_path": "/data/qiuhui/data/adni/images/116_S_0382/2006-11-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,887 mm³, 4.2% below the reference mean. With a Z-score of -0.10 (46.2th percentile), this represents normal volume ; hippocampal volume measures 7,416 mm³, 4.2% above the reference mean. With a Z-score of 0.39 (65.1th percentile), this represents normal volume ; whole brain volume measures 981,976 mm³, 0.8% above the reference mean. With a Z-score of 0.09 (53.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,607 mm³, 1.8% below the reference mean. With a Z-score of -0.11 (45.6th percentile), this represents normal volume ; fusiform gyrus volume measures 18,084 mm³, 6.3% above the reference mean. With a Z-score of 0.57 (71.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,701 mm³, 2.8% above the reference mean. With a Z-score of 0.24 (59.5th percentile), this represents normal volume . ",
  "text_data": "Age is 76.0 years. Gender is Female. Education: 20 years. MMSE: 29.0. 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 29/30 is within the normal range, and the absence of APOE4 further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:53:05.507567"
}