{
  "ptid_time": "127_S_0112_2007-07-30",
  "img_path": "/data/qiuhui/data/adni/images/127_S_0112/2007-07-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 48,337 mm³, 25.5% above the reference mean. With a Z-score of 0.61 (72.9th percentile), this represents normal volume ; hippocampal volume measures 8,053 mm³, 6.5% above the reference mean. With a Z-score of 0.64 (73.8th percentile), this represents normal volume ; whole brain volume measures 1,142,340 mm³, 5.8% above the reference mean. With a Z-score of 0.76 (77.5th percentile), this represents normal volume ; entorhinal cortex volume measures 5,366 mm³, 30.9% above the reference mean. With a Z-score of 2.09 (98.2th percentile), this represents significant enlargement; fusiform gyrus volume measures 21,613 mm³, 14.7% above the reference mean. With a Z-score of 1.25 (89.5th percentile), this represents mild enlargement; middle temporal gyrus volume measures 23,680 mm³, 11.0% above the reference mean. With a Z-score of 0.99 (83.8th percentile), this represents normal volume . ",
  "text_data": "Age is 72.1 years. Gender is Male. Education: 18 years. MMSE: 28.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements (hippocampus, whole brain, ventricular, and middle temporal gyrus) are within normal ranges or even slightly above average, with no significant atrophy. The MMSE score of 28 is within the normal range (≥26), and while APOE4 is a risk factor for Alzheimer's, there are no clear structural or cognitive deficits suggestive of MCI or dementia.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T12:54:54.493056"
}