{
  "ptid_time": "052_S_1251_2010-05-11",
  "img_path": "/data/qiuhui/data/adni/images/052_S_1251/2010-05-11/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,734 mm³, 22.6% below the reference mean. With a Z-score of -0.52 (30.3th percentile), this represents normal volume ; hippocampal volume measures 7,384 mm³, 3.8% above the reference mean. With a Z-score of 0.35 (63.6th percentile), this represents normal volume ; whole brain volume measures 952,148 mm³, 2.3% below the reference mean. With a Z-score of -0.29 (38.6th percentile), this represents normal volume ; entorhinal cortex volume measures 4,118 mm³, 12.1% above the reference mean. With a Z-score of 0.74 (77.2th percentile), this represents normal volume ; fusiform gyrus volume measures 16,538 mm³, 2.8% below the reference mean. With a Z-score of -0.25 (40.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,446 mm³, 1.4% above the reference mean. With a Z-score of 0.13 (55.0th percentile), this represents normal volume . ",
  "text_data": "Age is 77.2 years. Gender is Female. Education: 13 years. MMSE: 30.0. Logical Memory: 12.0. 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 based on Z-scores and percentiles. The MMSE score of 30/30 indicates no cognitive impairment, and the absence of APOE4 alleles further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T07:45:45.688896"
}