{
  "ptid_time": "128_S_0272_2006-10-12",
  "img_path": "/data/qiuhui/data/adni/images/128_S_0272/2006-10-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,973 mm³, 11.0% below the reference mean. With a Z-score of -0.25 (40.0th percentile), this represents normal volume ; hippocampal volume measures 7,845 mm³, 10.3% above the reference mean. With a Z-score of 0.94 (82.7th percentile), this represents normal volume ; whole brain volume measures 1,127,560 mm³, 15.7% above the reference mean. With a Z-score of 1.97 (97.6th percentile), this represents moderate enlargement; entorhinal cortex volume measures 4,730 mm³, 28.8% above the reference mean. With a Z-score of 1.77 (96.1th percentile), this represents moderate enlargement; fusiform gyrus volume measures 20,044 mm³, 17.8% above the reference mean. With a Z-score of 1.62 (94.8th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 24,953 mm³, 30.2% above the reference mean. With a Z-score of 2.62 (99.6th percentile), this represents significant enlargement. ",
  "text_data": "Age is 70.9 years. Gender is Female. Education: 19 years. MMSE: 30.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or above-average volumes in all 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.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T13:43:44.324250"
}