{
  "ptid_time": "037_S_0327_2006-11-15",
  "img_path": "/data/qiuhui/data/adni/images/037_S_0327/2006-11-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 53,769 mm³, 39.6% above the reference mean. With a Z-score of 0.95 (82.9th percentile), this represents normal volume ; hippocampal volume measures 8,348 mm³, 10.4% above the reference mean. With a Z-score of 1.02 (84.6th percentile), this represents mild enlargement; whole brain volume measures 1,081,250 mm³, 0.2% above the reference mean. With a Z-score of 0.02 (50.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,043 mm³, 1.4% below the reference mean. With a Z-score of -0.10 (46.2th percentile), this represents normal volume ; fusiform gyrus volume measures 20,243 mm³, 7.5% above the reference mean. With a Z-score of 0.64 (73.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,540 mm³, 0.9% above the reference mean. With a Z-score of 0.08 (53.4th percentile), this represents normal volume . ",
  "text_data": "Age is 70.5 years. Gender is Male. Education: 16 years. MMSE: 29.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges, with no significant atrophy in key regions like the hippocampus or entorhinal cortex. The MMSE score of 29 is within the normal range, and the absence of APOE4 alleles further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T06:26:30.507582"
}