{
  "ptid_time": "024_S_6846_2020-01-13",
  "img_path": "/data/qiuhui/data/adni/images/024_S_6846/2020-01-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 37,272 mm³, 3.2% below the reference mean. With a Z-score of -0.08 (46.9th percentile), this represents normal volume ; hippocampal volume measures 8,057 mm³, 6.6% above the reference mean. With a Z-score of 0.64 (74.0th percentile), this represents normal volume ; whole brain volume measures 1,227,000 mm³, 13.7% above the reference mean. With a Z-score of 1.78 (96.2th percentile), this represents moderate enlargement; entorhinal cortex volume measures 4,211 mm³, 2.7% above the reference mean. With a Z-score of 0.18 (57.2th percentile), this represents normal volume ; fusiform gyrus volume measures 20,719 mm³, 10.0% above the reference mean. With a Z-score of 0.85 (80.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 25,114 mm³, 17.7% above the reference mean. With a Z-score of 1.59 (94.4th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 77.1 years. Gender is Male. Education: 18 years. Handedness: Left. Race: White. MMSE: 30.0. MoCA: 27.0. Logical Memory: 9.0. APOEε4 alleles: 2.0. Biomarker levels: Flobetaben (FBB): 1.57 SUVR (profound elevated). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (hippocampus, entorhinal cortex, fusiform gyrus, etc.) are within or above the normal range, with no significant atrophy. Cognitive scores (MMSE 30, MoCA 27) are within normal limits for age. APOE4 homozygous status increases Alzheimer's risk but does not confirm disease without clinical or biomarker evidence.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T03:25:35.488505"
}