{
  "ptid_time": "082_S_4224_2019-06-12",
  "img_path": "/data/qiuhui/data/adni/images/082_S_4224/2019-06-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 46,701 mm³, 0.7% below the reference mean. With a Z-score of -0.02 (49.2th percentile), this represents normal volume ; hippocampal volume measures 6,325 mm³, 9.2% below the reference mean. With a Z-score of -0.80 (21.3th percentile), this represents normal volume ; whole brain volume measures 1,069,870 mm³, 4.0% above the reference mean. With a Z-score of 0.52 (69.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,435 mm³, 13.5% below the reference mean. With a Z-score of -0.88 (18.9th percentile), this represents normal volume ; fusiform gyrus volume measures 18,128 mm³, 0.3% above the reference mean. With a Z-score of 0.03 (51.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,882 mm³, 3.5% above the reference mean. With a Z-score of 0.32 (62.4th percentile), this represents normal volume . ",
  "text_data": "Age is 82.6 years. Gender is Male. Education: 20 years. MMSE: 30.0. Logical Memory: 8.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. The MMSE score of 30/30 indicates no cognitive impairment, and the absence of APOE4 alleles reduces genetic risk for Alzheimer's.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T10:06:27.392015"
}