{
  "ptid_time": "010_S_0067_2007-01-22",
  "img_path": "/data/qiuhui/data/adni/images/010_S_0067/2007-01-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 40,098 mm³, 4.1% above the reference mean. With a Z-score of 0.10 (53.9th percentile), this represents normal volume ; hippocampal volume measures 8,050 mm³, 6.5% above the reference mean. With a Z-score of 0.63 (73.7th percentile), this represents normal volume ; whole brain volume measures 1,027,880 mm³, 4.8% below the reference mean. With a Z-score of -0.62 (26.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,605 mm³, 12.3% above the reference mean. With a Z-score of 0.83 (79.8th percentile), this represents normal volume ; fusiform gyrus volume measures 18,474 mm³, 1.9% below the reference mean. With a Z-score of -0.16 (43.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,167 mm³, 8.6% above the reference mean. With a Z-score of 0.77 (77.9th percentile), this represents normal volume . ",
  "text_data": "Age is 75.5 years. Gender is Male. Education: 17 years. MMSE: 30.0. Logical Memory: 18.0. 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) are within normal ranges, with no significant atrophy. The MMSE score of 30/30 indicates intact cognitive function, and the absence of APOE4 alleles reduces genetic risk for Alzheimer's.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T22:29:02.804135"
}