{
  "ptid_time": "021_S_0276_2010-03-30",
  "img_path": "/data/qiuhui/data/adni/images/021_S_0276/2010-03-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,175 mm³, 26.9% below the reference mean. With a Z-score of -0.64 (26.0th percentile), this represents normal volume ; hippocampal volume measures 8,651 mm³, 14.4% above the reference mean. With a Z-score of 1.41 (92.1th percentile), this represents mild enlargement; whole brain volume measures 1,202,320 mm³, 11.4% above the reference mean. With a Z-score of 1.48 (93.0th percentile), this represents mild enlargement; entorhinal cortex volume measures 3,799 mm³, 7.4% below the reference mean. With a Z-score of -0.50 (30.9th percentile), this represents normal volume ; fusiform gyrus volume measures 19,994 mm³, 6.1% above the reference mean. With a Z-score of 0.52 (69.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 24,604 mm³, 15.3% above the reference mean. With a Z-score of 1.38 (91.6th percentile), this represents mild enlargement. ",
  "text_data": "Age is 74.9 years. Gender is Male. Education: 18 years. MMSE: 29.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or mildly enlarged structures, 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": "2025-07-26T01:25:03.801897"
}