{
  "ptid_time": "002_S_1280_2010-02-18",
  "img_path": "/data/qiuhui/data/adni/images/002_S_1280/2010-02-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,651 mm³, 22.9% below the reference mean. With a Z-score of -0.52 (30.0th percentile), this represents normal volume ; hippocampal volume measures 6,758 mm³, 5.0% below the reference mean. With a Z-score of -0.46 (32.3th percentile), this represents normal volume ; whole brain volume measures 970,245 mm³, 0.5% below the reference mean. With a Z-score of -0.06 (47.7th percentile), this represents normal volume ; entorhinal cortex volume measures 3,246 mm³, 11.6% below the reference mean. With a Z-score of -0.71 (23.8th percentile), this represents normal volume ; fusiform gyrus volume measures 15,496 mm³, 8.9% below the reference mean. With a Z-score of -0.81 (20.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,556 mm³, 8.4% below the reference mean. With a Z-score of -0.73 (23.3th percentile), this represents normal volume . ",
  "text_data": "Age is 73.7 years. Gender is Female. Education: 14 years. MMSE: 30.0. Logical Memory: 12.0. 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 (Z-scores between -0.06 and -0.81, percentiles 20.9–47.7). The MMSE score of 30/30 indicates no cognitive impairment, and the presence of one APOE4 allele does not override the otherwise normal findings.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-25T20:16:38.747749"
}