{
  "ptid_time": "131_S_0441_2011-05-17",
  "img_path": "/data/qiuhui/data/adni/images/131_S_0441/2011-05-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,271 mm³, 29.2% above the reference mean. With a Z-score of 0.67 (74.8th percentile), this represents normal volume ; whole brain volume measures 940,179 mm³, 3.5% below the reference mean. With a Z-score of -0.45 (32.8th percentile), this represents normal volume . ",
  "text_data": "Age is 77.7 years. Gender is Female. Education: 16 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Cardiovascular; Respiratory; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Renal-Genitourinary; Allergies or Drug Sensitivities; Smoking; Malignancy; Major Surgical Procedures. MMSE: 30.0. MoCA: 27.0. Logical Memory: 23.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.94 SUVR (mild reduced). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volumes (ventricular and whole brain) are within normal ranges, and cognitive scores (MMSE 30, MoCA 27) are intact, with no significant impairment. The mild reduction in AV45 (amyloid PET) suggests minimal amyloid deposition, but no clinical or structural evidence of cognitive decline.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T15:07:33.380521"
}