{
  "ptid_time": "128_S_1408_2008-02-01",
  "img_path": "/data/qiuhui/data/adni/images/128_S_1408/2008-02-01/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 42,979 mm³, 11.6% above the reference mean. With a Z-score of 0.28 (60.9th percentile), this represents normal volume ; hippocampal volume measures 8,696 mm³, 15.0% above the reference mean. With a Z-score of 1.47 (92.9th percentile), this represents mild enlargement; whole brain volume measures 1,149,670 mm³, 6.5% above the reference mean. With a Z-score of 0.85 (80.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,319 mm³, 5.3% above the reference mean. With a Z-score of 0.36 (64.1th percentile), this represents normal volume ; fusiform gyrus volume measures 17,755 mm³, 5.8% below the reference mean. With a Z-score of -0.49 (31.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,568 mm³, 3.6% below the reference mean. With a Z-score of -0.32 (37.3th percentile), this represents normal volume . ",
  "text_data": "Age is 71.9 years. Gender is Male. Education: 16 years. MMSE: 30.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges or even slightly above average, with no significant atrophy. The MMSE score of 30/30 indicates no cognitive impairment, and the absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T13:55:35.737659"
}