{
  "ptid_time": "041_S_1418_2010-08-17",
  "img_path": "/data/qiuhui/data/adni/images/041_S_1418/2010-08-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 39,329 mm³, 16.4% below the reference mean. With a Z-score of -0.47 (31.7th percentile), this represents normal volume ; hippocampal volume measures 6,332 mm³, 9.1% below the reference mean. With a Z-score of -0.79 (21.5th percentile), this represents normal volume ; whole brain volume measures 982,160 mm³, 4.6% below the reference mean. With a Z-score of -0.60 (27.5th percentile), this represents normal volume ; entorhinal cortex volume measures 3,093 mm³, 22.1% below the reference mean. With a Z-score of -1.44 (7.4th percentile), this represents mild atrophy; fusiform gyrus volume measures 16,981 mm³, 6.0% below the reference mean. With a Z-score of -0.52 (30.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,719 mm³, 12.2% below the reference mean. With a Z-score of -1.09 (13.8th percentile), this represents mild atrophy. ",
  "text_data": "Age is 84.5 years. Gender is Male. Education: 12 years. MMSE: 30.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The brain volume data shows mild atrophy in the entorhinal cortex and middle temporal gyrus, which are regions often affected in early Alzheimer's disease. However, the hippocampal volume is within normal limits, and the MMSE score of 30 is intact, with no significant cognitive complaints reported.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to mild atrophy in AD-vulnerable regions but preserved cognition and normal hippocampal volume)",
  "timestamp": "2025-07-26T07:06:28.184446"
}