{
  "ptid_time": "131_S_0441_2012-05-15",
  "img_path": "/data/qiuhui/data/adni/images/131_S_0441/2012-05-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 38,737 mm³, 38.0% above the reference mean. With a Z-score of 0.87 (80.8th percentile), this represents normal volume ; whole brain volume measures 891,563 mm³, 8.5% below the reference mean. With a Z-score of -1.07 (14.2th percentile), this represents mild atrophy. ",
  "text_data": "Age is 78.7 years. Gender is Female. Education: 16 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Cardiovascular; Respiratory; Dermatologic-Connective Tissue; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Allergies or Drug Sensitivities; Smoking; Malignancy; Major Surgical Procedures. MMSE: 30.0. MoCA: 30.0. Logical Memory: 19.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is within normal limits, but there is mild whole brain atrophy (Z-score -1.07). However, cognitive scores (MMSE and MoCA) are both perfect (30/30), and there is no APOE4 genetic risk factor.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (mild atrophy could be age-related, but cognitive performance remains intact)",
  "timestamp": "2025-07-26T15:07:41.816806"
}