{
  "ptid_time": "021_S_0159_2011-04-22",
  "img_path": "/data/qiuhui/data/adni/images/021_S_0159/2011-04-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 27,955 mm³, 24.4% below the reference mean. With a Z-score of -0.66 (25.5th percentile), this represents normal volume ; whole brain volume measures 846,163 mm³, 8.8% below the reference mean. With a Z-score of -1.06 (14.4th percentile), this represents mild atrophy. ",
  "text_data": "Age is 82.9 years. Gender is Female. Education: 17 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Musculoskeletal; Gastrointestinal; Renal-Genitourinary; Smoking; Malignancy; Major Surgical Procedures. MMSE: 30.0. MoCA: 30.0. Logical Memory: 21.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.13 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild whole brain atrophy but normal ventricular volume, which is common in aging. Cognitive scores (MMSE and MoCA) are both perfect (30/30), and there is no evidence of amyloid pathology (AV45 normal).  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T01:21:47.840836"
}