{
  "ptid_time": "010_S_0067_2006-08-14",
  "img_path": "/data/qiuhui/data/adni/images/010_S_0067/2006-08-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 38,155 mm³, 0.9% below the reference mean. With a Z-score of -0.02 (49.1th percentile), this represents normal volume ; hippocampal volume measures 7,986 mm³, 5.6% above the reference mean. With a Z-score of 0.55 (70.9th percentile), this represents normal volume ; whole brain volume measures 1,022,600 mm³, 5.3% below the reference mean. With a Z-score of -0.68 (24.7th percentile), this represents normal volume ; entorhinal cortex volume measures 4,324 mm³, 5.4% above the reference mean. With a Z-score of 0.37 (64.4th percentile), this represents normal volume ; fusiform gyrus volume measures 18,158 mm³, 3.6% below the reference mean. With a Z-score of -0.31 (37.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,569 mm³, 5.8% above the reference mean. With a Z-score of 0.52 (69.8th percentile), this represents normal volume . ",
  "text_data": "Age is 75.0 years. Gender is Male. Education: 17 years. MMSE: 30.0. 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": "2025-07-25T22:28:53.143133"
}