{
  "ptid_time": "018_S_0155_2006-02-23",
  "img_path": "/data/qiuhui/data/adni/images/018_S_0155/2006-02-23/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 76,968 mm³, 63.7% above the reference mean. With a Z-score of 1.85 (96.8th percentile), this represents moderate enlargement; whole brain volume measures 998,687 mm³, 3.0% below the reference mean. With a Z-score of -0.39 (34.9th percentile), this represents normal volume . ",
  "text_data": "Age is 81.1 years. Gender is Male. Education: 16 years. Handedness: Right. Race: White. Medical history: Psychiatric; Neurologic; Cardiovascular; Musculoskeletal; Gastrointestinal; Renal-Genitourinary; Major Surgical Procedures. MMSE: 28.0. Logical Memory: 3.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is moderately enlarged (63.7% above reference mean, Z-score 1.85), suggesting possible atrophy, while whole brain volume is within normal limits (Z-score -0.39). The MMSE score of 28 is normal, but ventricular enlargement in an 81-year-old APOE4 carrier raises concern for early neurodegenerative changes.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (due to normal MMSE but significant ventricular enlargement and APOE4 status)",
  "timestamp": "2025-07-26T00:45:33.658395"
}