{
  "ptid_time": "010_S_0419_2010-06-30",
  "img_path": "/data/qiuhui/data/adni/images/010_S_0419/2010-06-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 29,252 mm³, 24.1% below the reference mean. With a Z-score of -0.58 (28.2th percentile), this represents normal volume ; hippocampal volume measures 10,845 mm³, 43.5% above the reference mean. With a Z-score of 4.24 (100.0th percentile), this represents profound enlargement; whole brain volume measures 1,091,770 mm³, 1.1% above the reference mean. With a Z-score of 0.15 (55.9th percentile), this represents normal volume ; entorhinal cortex volume measures 5,091 mm³, 24.2% above the reference mean. With a Z-score of 1.64 (94.9th percentile), this represents moderate enlargement; fusiform gyrus volume measures 19,517 mm³, 3.6% above the reference mean. With a Z-score of 0.31 (62.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,959 mm³, 2.9% above the reference mean. With a Z-score of 0.26 (60.3th percentile), this represents normal volume . ",
  "text_data": "Age is 74.2 years. Gender is Male. Education: 18 years. MMSE: 30.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume data shows normal or above-average volumes in all measured regions, including the hippocampus and entorhinal cortex, which are typically affected in Alzheimer's disease. The MMSE score of 30/30 indicates no cognitive impairment, and the absence of APOE4 alleles further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-25T22:30:17.236590"
}