{
  "ptid_time": "023_S_0376_2007-10-25",
  "img_path": "/data/qiuhui/data/adni/images/023_S_0376/2007-10-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 67,911 mm³, 76.3% above the reference mean. With a Z-score of 1.83 (96.6th percentile), this represents moderate enlargement; hippocampal volume measures 7,006 mm³, 7.3% below the reference mean. With a Z-score of -0.71 (23.8th percentile), this represents normal volume ; whole brain volume measures 979,541 mm³, 9.3% below the reference mean. With a Z-score of -1.20 (11.5th percentile), this represents mild atrophy; entorhinal cortex volume measures 3,663 mm³, 10.7% below the reference mean. With a Z-score of -0.72 (23.5th percentile), this represents normal volume ; fusiform gyrus volume measures 16,841 mm³, 10.6% below the reference mean. With a Z-score of -0.90 (18.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,796 mm³, 11.9% below the reference mean. With a Z-score of -1.07 (14.2th percentile), this represents mild atrophy. ",
  "text_data": "Age is 72.0 years. Gender is Male. Education: 15 years. MMSE: 28.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The patient shows moderate ventricular enlargement and mild whole brain atrophy, but hippocampal, entorhinal cortex, fusiform gyrus, and middle temporal gyrus volumes are within normal or only mildly reduced ranges. The MMSE score of 28 is within normal limits, and there is no APOE4 genetic risk factor.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mild atrophy in some regions but preserved cognitive function and no significant biomarker abnormalities)",
  "timestamp": "2025-07-26T02:42:01.107605"
}