{
  "ptid_time": "126_S_0709_2007-02-14",
  "img_path": "/data/qiuhui/data/adni/images/126_S_0709/2007-02-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 58,939 mm³, 25.4% above the reference mean. With a Z-score of 0.74 (76.9th percentile), this represents normal volume ; hippocampal volume measures 7,411 mm³, 6.4% above the reference mean. With a Z-score of 0.55 (70.9th percentile), this represents normal volume ; whole brain volume measures 1,022,100 mm³, 0.7% below the reference mean. With a Z-score of -0.09 (46.4th percentile), this represents normal volume ; entorhinal cortex volume measures 4,305 mm³, 8.5% above the reference mean. With a Z-score of 0.55 (71.0th percentile), this represents normal volume ; fusiform gyrus volume measures 16,235 mm³, 10.1% below the reference mean. With a Z-score of -0.88 (19.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,666 mm³, 12.4% below the reference mean. With a Z-score of -1.11 (13.3th percentile), this represents mild atrophy. ",
  "text_data": "Age is 84.3 years. Gender is Male. Education: 8 years. MMSE: 28.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show mostly normal volumes, with only mild atrophy in the middle temporal gyrus. The MMSE score of 28 is within the normal range, and there are no significant structural abnormalities in key regions like the hippocampus or entorhinal cortex.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mild atrophy in the middle temporal gyrus, but no other strong indicators of MCI or dementia)",
  "timestamp": "2025-07-26T12:39:20.101272"
}