{
  "ptid_time": "130_S_1201_2007-01-15",
  "img_path": "/data/qiuhui/data/adni/images/130_S_1201/2007-01-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 75,829 mm³, 170.2% above the reference mean. With a Z-score of 3.90 (100.0th percentile), this represents profound enlargement; whole brain volume measures 952,156 mm³, 2.3% below the reference mean. With a Z-score of -0.29 (38.6th percentile), this represents normal volume . ",
  "text_data": "Age is 75.5 years. Gender is Female. Education: 16 years. Handedness: Right. Race: Asian. Medical history: Head, Eyes, Ears, Nose and Throat; Musculoskeletal; Endocrine-Metabolic; Smoking; Major Surgical Procedures. MMSE: 26.0. Logical Memory: 0.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The data shows profound ventricular enlargement (Z-score 3.90), which is strongly associated with neurodegeneration, while whole brain volume is within normal limits. The MMSE score of 26 is borderline, but the absence of APOE4 reduces genetic risk. Ventricular expansion suggests significant atrophy, likely due to Alzheimer’s or another dementia.  \n\n**Diagnosis:** **Dementia** (likely Alzheimer’s or mixed pathology)  \n**Confidence:** **Medium** (high confidence in neurodegeneration, but clinical correlation needed for specific etiology)",
  "timestamp": "2025-07-26T14:34:41.656867"
}