{
  "ptid_time": "007_S_1222_2010-02-18",
  "img_path": "/data/qiuhui/data/adni/images/007_S_1222/2010-02-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,943 mm³, 28.9% below the reference mean. With a Z-score of -0.66 (25.4th percentile), this represents normal volume ; hippocampal volume measures 7,062 mm³, 0.7% below the reference mean. With a Z-score of -0.07 (47.3th percentile), this represents normal volume ; whole brain volume measures 888,414 mm³, 8.8% below the reference mean. With a Z-score of -1.11 (13.3th percentile), this represents mild atrophy; entorhinal cortex volume measures 3,124 mm³, 14.9% below the reference mean. With a Z-score of -0.92 (17.9th percentile), this represents normal volume ; fusiform gyrus volume measures 14,637 mm³, 14.0% below the reference mean. With a Z-score of -1.27 (10.2th percentile), this represents mild atrophy; middle temporal gyrus volume measures 17,537 mm³, 8.5% below the reference mean. With a Z-score of -0.74 (23.0th percentile), this represents normal volume . ",
  "text_data": "Age is 76.4 years. Gender is Female. Education: 16 years. MMSE: 29.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild atrophy in the whole brain and fusiform gyrus, but hippocampal and entorhinal cortex volumes are within normal ranges. The MMSE score of 29 is normal, and there is no APOE4 genetic risk factor.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mild atrophy in some regions but normal cognitive scores and no significant genetic risk)",
  "timestamp": "2025-07-25T21:54:15.600591"
}