{
  "ptid_time": "141_S_1094_2007-07-31",
  "img_path": "/data/qiuhui/data/adni/images/141_S_1094/2007-07-31/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 83,000 mm³, 115.5% above the reference mean. With a Z-score of 2.77 (99.7th percentile), this represents significant enlargement; hippocampal volume measures 7,320 mm³, 3.2% below the reference mean. With a Z-score of -0.31 (37.9th percentile), this represents normal volume ; whole brain volume measures 1,124,020 mm³, 4.1% above the reference mean. With a Z-score of 0.54 (70.4th percentile), this represents normal volume ; entorhinal cortex volume measures 4,692 mm³, 14.4% above the reference mean. With a Z-score of 0.98 (83.6th percentile), this represents normal volume ; fusiform gyrus volume measures 20,282 mm³, 7.7% above the reference mean. With a Z-score of 0.65 (74.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 25,558 mm³, 19.8% above the reference mean. With a Z-score of 1.78 (96.2th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 76.5 years. Gender is Male. Education: 20 years. MMSE: 29.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is significantly enlarged (Z-score 2.77), which is often associated with neurodegenerative processes, but hippocampal volume is normal (Z-score -0.31), and other regions (whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) are within normal or slightly above normal ranges. The MMSE score of 29 is within the normal range, and there is no APOE4 risk allele.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (ventricular enlargement is notable, but other markers and cognitive performance suggest no significant",
  "timestamp": "2025-07-26T16:55:45.644268"
}