{
  "ptid_time": "016_S_0538_2007-08-20",
  "img_path": "/data/qiuhui/data/adni/images/016_S_0538/2007-08-20/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 60,522 mm³, 28.7% above the reference mean. With a Z-score of 0.83 (79.8th percentile), this represents normal volume ; hippocampal volume measures 7,849 mm³, 12.6% above the reference mean. With a Z-score of 1.09 (86.3th percentile), this represents mild enlargement; whole brain volume measures 1,069,960 mm³, 4.0% above the reference mean. With a Z-score of 0.52 (69.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,093 mm³, 3.1% above the reference mean. With a Z-score of 0.20 (58.1th percentile), this represents normal volume ; fusiform gyrus volume measures 17,775 mm³, 1.6% below the reference mean. With a Z-score of -0.14 (44.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,158 mm³, 0.1% below the reference mean. With a Z-score of -0.01 (49.8th percentile), this represents normal volume . ",
  "text_data": "Age is 83.7 years. Gender is Male. Education: 16 years. MMSE: 30.0. Logical Memory: 8.0. 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 or mildly enlarged, with no significant atrophy. The MMSE score of 30/30 indicates no cognitive impairment, and the absence of APOE4 further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T00:02:47.761778"
}