{
  "ptid_time": "127_S_6173_2018-02-05",
  "img_path": "/data/qiuhui/data/adni/images/127_S_6173/2018-02-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,545 mm³, 30.4% below the reference mean. With a Z-score of -0.70 (24.3th percentile), this represents normal volume ; hippocampal volume measures 7,772 mm³, 9.2% above the reference mean. With a Z-score of 0.85 (80.2th percentile), this represents normal volume ; whole brain volume measures 1,205,180 mm³, 23.7% above the reference mean. With a Z-score of 2.98 (99.9th percentile), this represents significant enlargement; entorhinal cortex volume measures 4,191 mm³, 14.1% above the reference mean. With a Z-score of 0.87 (80.7th percentile), this represents normal volume ; fusiform gyrus volume measures 20,541 mm³, 20.7% above the reference mean. With a Z-score of 1.89 (97.0th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 24,680 mm³, 28.7% above the reference mean. With a Z-score of 2.50 (99.4th percentile), this represents significant enlargement. ",
  "text_data": "Age is 70.4 years. Gender is Female. Education: 16 years. Handedness: Right. Race: White. MMSE: 30.0. MoCA: 25.0. Logical Memory: 9.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 1.20 SUVR (moderate elevated). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or above-normal volumes in all regions, including the hippocampus and entorhinal cortex, which are typically affected in Alzheimer's disease. The MMSE score of 30 (perfect) and MoCA of 25 (within normal range) suggest no significant cognitive impairment. The absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T13:30:18.701581"
}