{
  "ptid_time": "116_S_6624_2018-11-02",
  "img_path": "/data/qiuhui/data/adni/images/116_S_6624/2018-11-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 30,141 mm³, 0.4% above the reference mean. With a Z-score of 0.01 (50.4th percentile), this represents normal volume ; hippocampal volume measures 8,646 mm³, 7.7% above the reference mean. With a Z-score of 0.77 (78.0th percentile), this represents normal volume ; whole brain volume measures 1,138,280 mm³, 0.3% above the reference mean. With a Z-score of 0.05 (51.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,991 mm³, 17.1% above the reference mean. With a Z-score of 1.18 (88.1th percentile), this represents mild enlargement; fusiform gyrus volume measures 18,540 mm³, 6.9% below the reference mean. With a Z-score of -0.57 (28.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 25,309 mm³, 12.9% above the reference mean. With a Z-score of 1.06 (85.7th percentile), this represents mild enlargement. ",
  "text_data": "Age is 65.4 years. Gender is Male. Education: 19 years. Handedness: Right. Race: Asian. MMSE: 27.0. MoCA: 23.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 1.00 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are all within normal ranges or show mild enlargement, with no significant atrophy. The MMSE score of 27 is within the normal range, but the MoCA score of 23 suggests mild cognitive impairment (MCI). The absence of APOE4 reduces Alzheimer's risk.  \n\n**Diagnosis:** **MCI** (Mild Cognitive Impairment)  \n**Confidence:** **Medium** (due to normal imaging but borderline MoCA score)",
  "timestamp": "2025-07-26T12:19:48.683723"
}