{
  "ptid_time": "073_S_0089_2006-08-31",
  "img_path": "/data/qiuhui/data/adni/images/073_S_0089/2006-08-31/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,650 mm³, 31.2% below the reference mean. With a Z-score of -0.74 (22.9th percentile), this represents normal volume ; hippocampal volume measures 7,691 mm³, 4.2% below the reference mean. With a Z-score of -0.42 (33.8th percentile), this represents normal volume ; whole brain volume measures 1,085,200 mm³, 4.3% below the reference mean. With a Z-score of -0.62 (26.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,307 mm³, 1.0% above the reference mean. With a Z-score of 0.07 (52.9th percentile), this represents normal volume ; fusiform gyrus volume measures 21,737 mm³, 9.2% above the reference mean. With a Z-score of 0.76 (77.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 24,079 mm³, 7.4% above the reference mean. With a Z-score of 0.61 (73.0th percentile), this represents normal volume . ",
  "text_data": "Age is 65.6 years. Gender is Male. Education: 20 years. MMSE: 30.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges, with Z-scores and percentiles indicating no significant atrophy. The MMSE score of 30 is perfect, and the absence of APOE4 alleles further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T09:28:17.082704"
}