{
  "ptid_time": "094_S_6419_2018-06-27",
  "img_path": "/data/qiuhui/data/adni/images/094_S_6419/2018-06-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 38,836 mm³, 0.8% above the reference mean. With a Z-score of 0.02 (50.8th percentile), this represents normal volume ; hippocampal volume measures 7,068 mm³, 6.5% below the reference mean. With a Z-score of -0.63 (26.3th percentile), this represents normal volume ; whole brain volume measures 1,010,610 mm³, 6.4% below the reference mean. With a Z-score of -0.83 (20.4th percentile), this represents normal volume ; entorhinal cortex volume measures 4,600 mm³, 12.2% above the reference mean. With a Z-score of 0.83 (79.6th percentile), this represents normal volume ; fusiform gyrus volume measures 19,200 mm³, 1.9% above the reference mean. With a Z-score of 0.16 (56.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,053 mm³, 15.4% below the reference mean. With a Z-score of -1.38 (8.3th percentile), this represents mild atrophy. ",
  "text_data": "Age is 75.5 years. Gender is Male. Education: 14 years. Handedness: Right. Race: White. MMSE: 29.0. MoCA: 28.0. Logical Memory: 8.0. APOEε4 alleles: 1.0. Biomarker levels: Flobetaben (FBB): 1.19 SUVR (moderate elevated). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show mild atrophy in the middle temporal gyrus, but all other regions (hippocampus, whole brain, entorhinal cortex, fusiform gyrus) are within normal ranges. Cognitive scores (MMSE 29, MoCA 28) are intact, and APOE4 status (heterozygous) does not strongly indicate imminent decline.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (Mild atrophy in the middle temporal gyrus is notable, but cognitive performance remains strong, suggesting no current impairment.)",
  "timestamp": "2025-07-26T10:35:33.195192"
}