{
  "ptid_time": "057_S_0934_2009-11-04",
  "img_path": "/data/qiuhui/data/adni/images/057_S_0934/2009-11-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,263 mm³, 6.4% below the reference mean. With a Z-score of -0.15 (44.1th percentile), this represents normal volume ; hippocampal volume measures 6,906 mm³, 2.9% below the reference mean. With a Z-score of -0.27 (39.4th percentile), this represents normal volume ; whole brain volume measures 912,387 mm³, 6.4% below the reference mean. With a Z-score of -0.80 (21.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,374 mm³, 8.1% below the reference mean. With a Z-score of -0.50 (30.9th percentile), this represents normal volume ; fusiform gyrus volume measures 18,449 mm³, 8.4% above the reference mean. With a Z-score of 0.77 (77.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,180 mm³, 5.2% below the reference mean. With a Z-score of -0.45 (32.7th percentile), this represents normal volume . ",
  "text_data": "Age is 73.0 years. Gender is Female. Education: 10 years. MMSE: 30.0. Logical Memory: 19.0. 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 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": "2025-07-26T08:06:32.774962"
}