{
  "ptid_time": "018_S_0142_2007-02-16",
  "img_path": "/data/qiuhui/data/adni/images/018_S_0142/2007-02-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 44,583 mm³, 5.2% below the reference mean. With a Z-score of -0.15 (44.0th percentile), this represents normal volume ; hippocampal volume measures 6,202 mm³, 11.0% below the reference mean. With a Z-score of -0.95 (17.1th percentile), this represents normal volume ; whole brain volume measures 975,908 mm³, 5.2% below the reference mean. With a Z-score of -0.68 (24.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,844 mm³, 3.1% below the reference mean. With a Z-score of -0.21 (41.8th percentile), this represents normal volume ; fusiform gyrus volume measures 17,071 mm³, 5.5% below the reference mean. With a Z-score of -0.48 (31.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,764 mm³, 2.9% above the reference mean. With a Z-score of 0.26 (60.4th percentile), this represents normal volume . ",
  "text_data": "Age is 80.2 years. Gender is Male. Education: 14 years. MMSE: 30.0. Logical Memory: 3.0. APOEε4 alleles: 1.0. ",
  "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 30 is optimal, indicating no cognitive impairment. The presence of one APOE4 allele increases Alzheimer's risk but does not confirm pathology in the absence of clinical or structural abnormalities.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T00:44:38.623004"
}