{
  "ptid_time": "006_S_4485_2012-08-24",
  "img_path": "/data/qiuhui/data/adni/images/006_S_4485/2012-08-24/t1.nii.gz",
  "img_finding": "Image findings: whole brain volume measures 1,165,180 mm³, 7.9% above the reference mean. With a Z-score of 1.03 (84.9th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,634 mm³, 13.0% above the reference mean. With a Z-score of 0.88 (81.1th percentile), this represents normal volume ; fusiform gyrus volume measures 19,442 mm³, 3.2% above the reference mean. With a Z-score of 0.27 (60.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,671 mm³, 1.6% above the reference mean. With a Z-score of 0.14 (55.6th percentile), this represents normal volume . ",
  "text_data": "Age is 73.8 years. Gender is Male. Education: 17 years. MMSE: 30.0. MoCA: 26.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volumes are all within normal or above-average ranges, with no significant atrophy in key regions like the entorhinal cortex, fusiform gyrus, or middle temporal gyrus. Cognitive scores (MMSE 30, MoCA 26) are within normal limits, and the absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T21:38:41.285436"
}