{
  "ptid_time": "007_S_1206_2010-02-10",
  "img_path": "/data/qiuhui/data/adni/images/007_S_1206/2010-02-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 47,676 mm³, 23.8% above the reference mean. With a Z-score of 0.57 (71.6th percentile), this represents normal volume ; hippocampal volume measures 7,564 mm³, 0.1% above the reference mean. With a Z-score of 0.01 (50.3th percentile), this represents normal volume ; whole brain volume measures 1,117,660 mm³, 3.5% above the reference mean. With a Z-score of 0.46 (67.7th percentile), this represents normal volume ; entorhinal cortex volume measures 4,306 mm³, 5.0% above the reference mean. With a Z-score of 0.34 (63.3th percentile), this represents normal volume ; fusiform gyrus volume measures 20,493 mm³, 8.8% above the reference mean. With a Z-score of 0.75 (77.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,662 mm³, 1.5% above the reference mean. With a Z-score of 0.14 (55.4th percentile), this represents normal volume . ",
  "text_data": "Age is 75.9 years. Gender is Male. Education: 14 years. MMSE: 27.0. Logical Memory: 14.0. 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 Z-scores close to or slightly above the mean. The MMSE score of 27 is within the normal range (≥26), and the absence of APOE4 alleles reduces genetic risk for Alzheimer's.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T21:52:56.852399"
}