{
  "ptid_time": "098_S_0172_2010-05-08",
  "img_path": "/data/qiuhui/data/adni/images/098_S_0172/2010-05-08/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 16,665 mm³, 40.6% below the reference mean. With a Z-score of -0.93 (17.6th percentile), this represents normal volume ; hippocampal volume measures 7,492 mm³, 5.3% above the reference mean. With a Z-score of 0.49 (68.7th percentile), this represents normal volume ; whole brain volume measures 955,118 mm³, 2.0% below the reference mean. With a Z-score of -0.25 (40.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,835 mm³, 4.4% above the reference mean. With a Z-score of 0.27 (60.7th percentile), this represents normal volume ; fusiform gyrus volume measures 16,135 mm³, 5.2% below the reference mean. With a Z-score of -0.47 (31.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,417 mm³, 3.9% below the reference mean. With a Z-score of -0.34 (36.7th percentile), this represents normal volume . ",
  "text_data": "Age is 74.6 years. Gender is Female. Education: 18 years. MMSE: 30.0. Logical Memory: 15.0. 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 further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T10:39:06.046276"
}