{
  "ptid_time": "022_S_1351_2007-09-07",
  "img_path": "/data/qiuhui/data/adni/images/022_S_1351/2007-09-07/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,472 mm³, 12.8% below the reference mean. With a Z-score of -0.29 (38.5th percentile), this represents normal volume ; hippocampal volume measures 6,827 mm³, 4.0% below the reference mean. With a Z-score of -0.37 (35.5th percentile), this represents normal volume ; whole brain volume measures 996,147 mm³, 2.2% above the reference mean. With a Z-score of 0.28 (60.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,568 mm³, 2.9% below the reference mean. With a Z-score of -0.18 (43.0th percentile), this represents normal volume ; fusiform gyrus volume measures 15,939 mm³, 6.3% below the reference mean. With a Z-score of -0.57 (28.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,377 mm³, 4.1% below the reference mean. With a Z-score of -0.36 (36.0th percentile), this represents normal volume . ",
  "text_data": "Age is 72.3 years. Gender is Female. Education: 12 years. MMSE: 28.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "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 28 is within the normal range (≥26), and while the presence of two APOE4 alleles increases Alzheimer's risk, there is no current evidence of cognitive impairment.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T02:09:33.904887"
}