{
  "ptid_time": "002_S_1280_2008-03-25",
  "img_path": "/data/qiuhui/data/adni/images/002_S_1280/2008-03-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,828 mm³, 22.2% below the reference mean. With a Z-score of -0.51 (30.5th percentile), this represents normal volume ; hippocampal volume measures 6,807 mm³, 4.3% below the reference mean. With a Z-score of -0.40 (34.6th percentile), this represents normal volume ; whole brain volume measures 952,737 mm³, 2.2% below the reference mean. With a Z-score of -0.28 (38.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,154 mm³, 14.1% below the reference mean. With a Z-score of -0.87 (19.3th percentile), this represents normal volume ; fusiform gyrus volume measures 15,614 mm³, 8.2% below the reference mean. With a Z-score of -0.75 (22.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,938 mm³, 11.6% below the reference mean. With a Z-score of -1.01 (15.6th percentile), this represents mild atrophy. ",
  "text_data": "Age is 71.7 years. Gender is Female. Education: 14 years. MMSE: 29.0. Logical Memory: 12.0. Laboratory findings: Basophils: 0.15 (profound elevated); Basophils: 2.50 (profound elevated); Serum Glucose: 142.00 (profound elevated). APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes are within normal ranges except for mild atrophy in the middle temporal gyrus (Z-score -1.01, 15.6th percentile). The MMSE score of 29 is within the normal range, and there are no significant structural deficits in key Alzheimer’s-related regions (hippocampus, entorhinal cortex). The presence of one APOE4 allele increases risk but does not confirm pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mild temporal atrophy but otherwise normal cognitive and structural findings)",
  "timestamp": "2025-07-25T20:16:24.272004"
}