{
  "ptid_time": "033_S_0516_2009-06-12",
  "img_path": "/data/qiuhui/data/adni/images/033_S_0516/2009-06-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,572 mm³, 49.7% below the reference mean. With a Z-score of -4.50 (0.0th percentile), this represents profound atrophy; hippocampal volume measures 6,986 mm³, 9.7% above the reference mean. With a Z-score of 1.06 (85.5th percentile), this represents mild enlargement; whole brain volume measures 1,046,000 mm³, 4.4% above the reference mean. With a Z-score of 0.75 (77.5th percentile), this represents normal volume ; entorhinal cortex volume measures 3,891 mm³, 1.6% below the reference mean. With a Z-score of -0.08 (46.7th percentile), this represents normal volume ; fusiform gyrus volume measures 17,455 mm³, 3.6% above the reference mean. With a Z-score of 0.41 (66.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,871 mm³, 0.1% above the reference mean. With a Z-score of 0.02 (50.6th percentile), this represents normal volume . ",
  "text_data": "Age is 90.6 years. Gender is Male. Education: 15 years. MMSE: 27.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The data shows profound ventricular atrophy (Z-score -4.50) but otherwise normal or mildly enlarged brain volumes, including the hippocampus (Z-score 1.06). The MMSE score of 27 is within the normal range, and there is no APOE4 risk allele. Given the advanced age (90.6), some ventricular enlargement may be age-related rather than pathological.  \n\nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium",
  "timestamp": "2025-07-26T05:12:59.627511"
}