{
  "ptid_time": "014_S_0519_2006-12-07",
  "img_path": "/data/qiuhui/data/adni/images/014_S_0519/2006-12-07/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 46,005 mm³, 19.4% above the reference mean. With a Z-score of 0.47 (67.9th percentile), this represents normal volume ; hippocampal volume measures 8,015 mm³, 6.0% above the reference mean. With a Z-score of 0.59 (72.2th percentile), this represents normal volume ; whole brain volume measures 1,035,380 mm³, 4.1% below the reference mean. With a Z-score of -0.53 (29.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,973 mm³, 3.1% below the reference mean. With a Z-score of -0.21 (41.6th percentile), this represents normal volume ; fusiform gyrus volume measures 18,855 mm³, 0.1% above the reference mean. With a Z-score of 0.01 (50.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,052 mm³, 3.3% above the reference mean. With a Z-score of 0.30 (61.8th percentile), this represents normal volume . ",
  "text_data": "Age is 74.6 years. Gender is Male. Education: 16 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 is optimal, and the absence of APOE4 alleles further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T23:40:23.357229"
}