{
  "ptid_time": "141_S_6178_2020-02-25",
  "img_path": "/data/qiuhui/data/adni/images/141_S_6178/2020-02-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,423 mm³, 9.3% above the reference mean. With a Z-score of 0.23 (59.2th percentile), this represents normal volume ; hippocampal volume measures 7,685 mm³, 0.0% above the reference mean. With a Z-score of 0.00 (50.0th percentile), this represents normal volume ; whole brain volume measures 967,813 mm³, 6.0% below the reference mean. With a Z-score of -0.74 (22.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,843 mm³, 1.3% below the reference mean. With a Z-score of -0.10 (46.0th percentile), this represents normal volume ; fusiform gyrus volume measures 18,273 mm³, 0.3% above the reference mean. With a Z-score of 0.04 (51.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 24,009 mm³, 17.0% above the reference mean. With a Z-score of 1.51 (93.5th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 68.0 years. Gender is Female. Education: 16 years. MMSE: 30.0. MoCA: 28.0. Logical Memory: 17.0. APOEε4 alleles: 1.0. Biomarker levels: Flobetaben (FBB): 1.58 SUVR (profound elevated). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus) are within normal ranges except for the middle temporal gyrus, which shows moderate enlargement—an atypical but not necessarily pathological finding. Cognitive scores (MMSE 30, MoCA 28) are intact, and APOE4 heterozygous status alone does not indicate impairment.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T17:07:57.163675"
}