{
  "ptid_time": "027_S_5083_2014-04-01",
  "img_path": "/data/qiuhui/data/adni/images/027_S_5083/2014-04-01/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,486 mm³, 26.0% below the reference mean. With a Z-score of -0.62 (26.6th percentile), this represents normal volume ; hippocampal volume measures 8,443 mm³, 11.7% above the reference mean. With a Z-score of 1.14 (87.3th percentile), this represents mild enlargement; whole brain volume measures 1,100,600 mm³, 2.0% above the reference mean. With a Z-score of 0.25 (60.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,157 mm³, 1.4% above the reference mean. With a Z-score of 0.09 (53.7th percentile), this represents normal volume ; fusiform gyrus volume measures 21,020 mm³, 11.6% above the reference mean. With a Z-score of 0.99 (83.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 25,237 mm³, 18.3% above the reference mean. With a Z-score of 1.64 (95.0th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 74.7 years. Gender is Male. Education: 16 years. MMSE: 28.0. MoCA: 26.0. Logical Memory: 11.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or above-average volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus), with no significant atrophy. Cognitive scores (MMSE 28, MoCA 26) are within normal ranges for age, and the presence of two APOE4 alleles increases genetic risk but does not confirm impairment.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to APOE4 risk factor, but no structural or cognitive deficits observed)",
  "timestamp": "2025-07-26T04:06:53.398337"
}