{
  "ptid_time": "129_S_2347_2014-04-07",
  "img_path": "/data/qiuhui/data/adni/images/129_S_2347/2014-04-07/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 49,322 mm³, 28.1% above the reference mean. With a Z-score of 0.67 (74.9th percentile), this represents normal volume ; hippocampal volume measures 7,352 mm³, 2.7% below the reference mean. With a Z-score of -0.27 (39.5th percentile), this represents normal volume ; whole brain volume measures 1,111,640 mm³, 3.0% above the reference mean. With a Z-score of 0.39 (65.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,012 mm³, 2.2% below the reference mean. With a Z-score of -0.15 (44.2th percentile), this represents normal volume ; fusiform gyrus volume measures 18,570 mm³, 1.4% below the reference mean. With a Z-score of -0.12 (45.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,869 mm³, 2.5% above the reference mean. With a Z-score of 0.22 (58.8th percentile), this represents normal volume . ",
  "text_data": "Age is 74.0 years. Gender is Male. Education: 18 years. MMSE: 30.0. MoCA: 26.0. Logical Memory: 7.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. Cognitive screening (MMSE 30, MoCA 26) is within normal limits for age, though MoCA is slightly lower than MMSE, which may suggest mild attentional or executive concerns. APOE4 carrier status increases Alzheimer’s risk but does not confirm pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to borderline MoCA and APOE4 status, but no clear structural or cognitive deficits)",
  "timestamp": "2025-07-26T14:13:28.480460"
}