{
  "ptid_time": "094_S_1188_2010-01-25",
  "img_path": "/data/qiuhui/data/adni/images/094_S_1188/2010-01-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 37,644 mm³, 1.8% above the reference mean. With a Z-score of 0.05 (52.0th percentile), this represents normal volume ; hippocampal volume measures 6,978 mm³, 7.4% above the reference mean. With a Z-score of 0.60 (72.4th percentile), this represents normal volume ; whole brain volume measures 936,174 mm³, 0.9% above the reference mean. With a Z-score of 0.10 (54.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,495 mm³, 0.9% above the reference mean. With a Z-score of 0.05 (52.0th percentile), this represents normal volume ; fusiform gyrus volume measures 14,923 mm³, 7.4% below the reference mean. With a Z-score of -0.55 (29.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,795 mm³, 4.3% above the reference mean. With a Z-score of 0.38 (64.7th percentile), this represents normal volume . ",
  "text_data": "Age is 84.2 years. Gender is Female. Education: 18 years. MMSE: 30.0. Logical Memory: 13.0. 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, with no significant atrophy. The MMSE score of 30/30 indicates intact cognitive function, and the presence of one APOE4 allele does not override the absence of structural or clinical deficits.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T10:16:45.924345"
}