{
  "ptid_time": "007_S_1206_2007-08-21",
  "img_path": "/data/qiuhui/data/adni/images/007_S_1206/2007-08-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 42,948 mm³, 11.5% above the reference mean. With a Z-score of 0.28 (60.9th percentile), this represents normal volume ; hippocampal volume measures 7,886 mm³, 4.3% above the reference mean. With a Z-score of 0.42 (66.3th percentile), this represents normal volume ; whole brain volume measures 1,128,700 mm³, 4.6% above the reference mean. With a Z-score of 0.59 (72.3th percentile), this represents normal volume ; entorhinal cortex volume measures 4,005 mm³, 2.3% below the reference mean. With a Z-score of -0.16 (43.7th percentile), this represents normal volume ; fusiform gyrus volume measures 19,618 mm³, 4.1% above the reference mean. With a Z-score of 0.35 (63.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,391 mm³, 9.6% above the reference mean. With a Z-score of 0.86 (80.6th percentile), this represents normal volume . ",
  "text_data": "Age is 73.4 years. Gender is Male. Education: 14 years. MMSE: 27.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges (Z-scores between -0.16 and 0.86). The MMSE score of 27 is within the normal range (≥26), and the absence of APOE4 alleles further reduces Alzheimer's risk. No structural or cognitive deficits are evident.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T21:52:32.760851"
}