{
  "ptid_time": "014_S_0548_2008-06-25",
  "img_path": "/data/qiuhui/data/adni/images/014_S_0548/2008-06-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 14,718 mm³, 47.6% below the reference mean. With a Z-score of -1.09 (13.8th percentile), this represents mild atrophy; hippocampal volume measures 7,256 mm³, 2.0% above the reference mean. With a Z-score of 0.18 (57.2th percentile), this represents normal volume ; whole brain volume measures 1,063,830 mm³, 9.1% above the reference mean. With a Z-score of 1.15 (87.5th percentile), this represents mild enlargement; entorhinal cortex volume measures 3,815 mm³, 3.9% above the reference mean. With a Z-score of 0.24 (59.4th percentile), this represents normal volume ; fusiform gyrus volume measures 18,499 mm³, 8.7% above the reference mean. With a Z-score of 0.79 (78.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,169 mm³, 0.0% below the reference mean. With a Z-score of -0.00 (50.0th percentile), this represents normal volume . ",
  "text_data": "Age is 75.6 years. Gender is Female. Education: 12 years. MMSE: 27.0. Logical Memory: 9.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mild ventricular enlargement (consistent with mild atrophy) but otherwise normal hippocampal, entorhinal cortex, fusiform gyrus, and middle temporal gyrus volumes. The MMSE score of 27 is within the normal range for age, and the APOE4 heterozygous status is a moderate risk factor but not definitive for cognitive decline.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mild ventricular enlargement, but no other significant structural or cognitive deficits)",
  "timestamp": "2025-07-25T23:42:36.874463"
}