{
  "ptid_time": "027_S_6183_2018-02-01",
  "img_path": "/data/qiuhui/data/adni/images/027_S_6183/2018-02-01/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,265 mm³, 20.8% above the reference mean. With a Z-score of 0.49 (68.9th percentile), this represents normal volume ; hippocampal volume measures 7,268 mm³, 9.5% below the reference mean. With a Z-score of -0.95 (17.2th percentile), this represents normal volume ; whole brain volume measures 1,140,340 mm³, 0.5% above the reference mean. With a Z-score of 0.07 (52.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,140 mm³, 2.9% below the reference mean. With a Z-score of -0.20 (42.1th percentile), this represents normal volume ; fusiform gyrus volume measures 22,666 mm³, 13.8% above the reference mean. With a Z-score of 1.15 (87.5th percentile), this represents mild enlargement; middle temporal gyrus volume measures 22,741 mm³, 1.5% above the reference mean. With a Z-score of 0.12 (54.8th percentile), this represents normal volume . ",
  "text_data": "Age is 65.6 years. Gender is Male. Education: 16 years. Handedness: Right. Race: White. MMSE: 30.0. MoCA: 26.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 1.08 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume is slightly reduced (9.5% below mean, Z-score -0.95), but still within the normal range. Cognitive scores (MMSE 30, MoCA 26) are borderline for MCI (MoCA <26 suggests MCI), but no significant atrophy or APOE4 risk is present.  \n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (MoCA is slightly concerning, but structural and genetic data do not strongly support MCI or dementia.)",
  "timestamp": "2025-07-26T04:12:49.816614"
}