{
  "ptid_time": "041_S_1391_2007-03-29",
  "img_path": "/data/qiuhui/data/adni/images/041_S_1391/2007-03-29/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 70,457 mm³, 49.9% above the reference mean. With a Z-score of 1.45 (92.6th percentile), this represents mild enlargement; whole brain volume measures 1,038,030 mm³, 0.9% above the reference mean. With a Z-score of 0.11 (54.5th percentile), this represents normal volume . ",
  "text_data": "Age is 85.1 years. Gender is Male. Education: 12 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Cardiovascular; Dermatologic-Connective Tissue; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Major Surgical Procedures. MMSE: 26.0. Logical Memory: 2.0. APOEε4 alleles: 0.0. Biomarker levels: Pittsburgh compound B: 1.16 SUVR (mild reduced). ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is mildly enlarged (49.9% above reference mean, Z-score 1.45), which can indicate atrophy, but whole brain volume is normal (Z-score 0.11). The MMSE score of 26 is borderline but still within normal limits for age. No APOE4 allele is present, reducing genetic risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (mild ventricular enlargement could suggest early changes, but cognitive performance is preserved)",
  "timestamp": "2025-07-26T07:05:12.683244"
}