{
  "ptid_time": "020_S_1288_2009-03-27",
  "img_path": "/data/qiuhui/data/adni/images/020_S_1288/2009-03-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 12,152 mm³, 59.5% below the reference mean. With a Z-score of -1.41 (7.9th percentile), this represents mild atrophy; hippocampal volume measures 8,476 mm³, 5.6% above the reference mean. With a Z-score of 0.56 (71.2th percentile), this represents normal volume ; whole brain volume measures 1,210,030 mm³, 6.7% above the reference mean. With a Z-score of 0.94 (82.7th percentile), this represents normal volume ; entorhinal cortex volume measures 4,037 mm³, 5.3% below the reference mean. With a Z-score of -0.37 (35.7th percentile), this represents normal volume ; fusiform gyrus volume measures 21,106 mm³, 6.0% above the reference mean. With a Z-score of 0.50 (69.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,771 mm³, 6.1% above the reference mean. With a Z-score of 0.50 (69.1th percentile), this represents normal volume . ",
  "text_data": "Age is 61.9 years. Gender is Male. Education: 20 years. MMSE: 30.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild ventricular atrophy (Z-score -1.41) but otherwise normal volumes in the hippocampus, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus. The MMSE score of 30 is intact, and there is no APOE4 genetic risk factor.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T01:13:18.225534"
}