{
  "ptid_time": "022_S_4266_2013-02-15",
  "img_path": "/data/qiuhui/data/adni/images/022_S_4266/2013-02-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,634 mm³, 22.9% below the reference mean. With a Z-score of -0.52 (30.0th percentile), this represents normal volume ; hippocampal volume measures 7,365 mm³, 3.5% above the reference mean. With a Z-score of 0.32 (62.7th percentile), this represents normal volume ; whole brain volume measures 1,130,040 mm³, 15.9% above the reference mean. With a Z-score of 2.01 (97.8th percentile), this represents significant enlargement; entorhinal cortex volume measures 3,277 mm³, 10.8% below the reference mean. With a Z-score of -0.66 (25.4th percentile), this represents normal volume ; fusiform gyrus volume measures 19,280 mm³, 13.3% above the reference mean. With a Z-score of 1.21 (88.7th percentile), this represents mild enlargement; middle temporal gyrus volume measures 21,651 mm³, 12.9% above the reference mean. With a Z-score of 1.12 (86.9th percentile), this represents mild enlargement. ",
  "text_data": "Age is 70.8 years. Gender is Female. Education: 14 years. MMSE: 30.0. MoCA: 26.0. Logical Memory: 17.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or above-average volumes in most regions, including the hippocampus, with only mild reductions in the entorhinal cortex. Cognitive scores (MMSE 30, MoCA 26) are within normal limits for age, and the presence of one APOE4 allele does not outweigh the lack of structural or clinical evidence of impairment.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T02:18:55.512120"
}