{
  "ptid_time": "007_S_0128_2008-02-07",
  "img_path": "/data/qiuhui/data/adni/images/007_S_0128/2008-02-07/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 27,414 mm³, 22.7% above the reference mean. With a Z-score of 0.57 (71.5th percentile), this represents normal volume ; hippocampal volume measures 5,980 mm³, 22.2% below the reference mean. With a Z-score of -2.49 (0.6th percentile), this represents significant atrophy; whole brain volume measures 825,142 mm³, 19.8% below the reference mean. With a Z-score of -2.47 (0.7th percentile), this represents significant atrophy; entorhinal cortex volume measures 2,535 mm³, 34.9% below the reference mean. With a Z-score of -2.70 (0.3th percentile), this represents significant atrophy; fusiform gyrus volume measures 16,358 mm³, 10.2% below the reference mean. With a Z-score of -1.15 (12.6th percentile), this represents mild atrophy; middle temporal gyrus volume measures 13,867 mm³, 32.4% below the reference mean. With a Z-score of -2.88 (0.2th percentile), this represents significant atrophy. ",
  "text_data": "Age is 66.1 years. Gender is Female. Education: 20 years. MMSE: 25.0. Logical Memory: 1.0. APOEε4 alleles: 2.0. Biomarker levels: Pittsburgh compound B: 2.27 SUVR (moderate elevated). ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The patient shows significant atrophy in key Alzheimer's-related regions (hippocampus, entorhinal cortex, middle temporal gyrus) with Z-scores below the 1st percentile, alongside mild cognitive impairment (MMSE 25). The presence of two APOE4 alleles further increases Alzheimer's risk.  \n**Diagnosis:** **Mild Cognitive Impairment (MCI)** (likely prodromal Alzheimer's disease)  \n**Confidence:** **High**",
  "timestamp": "2025-07-25T21:47:00.305241"
}