{
  "ptid_time": "135_S_4489_2012-08-02",
  "img_path": "/data/qiuhui/data/adni/images/135_S_4489/2012-08-02/t1.nii.gz",
  "img_finding": "Image findings: hippocampal volume measures 7,850 mm³, 3.8% above the reference mean. With a Z-score of 0.38 (64.6th percentile), this represents normal volume ; whole brain volume measures 1,114,870 mm³, 3.3% above the reference mean. With a Z-score of 0.43 (66.5th percentile), this represents normal volume ; entorhinal cortex volume measures 3,542 mm³, 13.6% below the reference mean. With a Z-score of -0.92 (17.8th percentile), this represents normal volume ; fusiform gyrus volume measures 19,780 mm³, 5.0% above the reference mean. With a Z-score of 0.43 (66.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 24,258 mm³, 13.7% above the reference mean. With a Z-score of 1.23 (89.1th percentile), this represents mild enlargement. ",
  "text_data": "Age is 74.7 years. Gender is Male. Education: 20 years. MMSE: 30.0. MoCA: 26.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal, whole brain, fusiform gyrus, and middle temporal gyrus volumes are within normal ranges or mildly enlarged, while the entorhinal cortex is slightly reduced but still within normal limits. Cognitive testing (MMSE 30, MoCA 26) shows no significant impairment, and the absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T15:36:58.507597"
}