{
  "ptid_time": "021_S_2142_2011-11-02",
  "img_path": "/data/qiuhui/data/adni/images/021_S_2142/2011-11-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 109,762 mm³, 196.9% above the reference mean. With a Z-score of 5.32 (100.0th percentile), this represents profound enlargement; hippocampal volume measures 5,920 mm³, 8.9% below the reference mean. With a Z-score of -0.71 (23.9th percentile), this represents normal volume ; whole brain volume measures 1,070,110 mm³, 15.3% above the reference mean. With a Z-score of 1.84 (96.7th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 83.7 years. Gender is Female. Education: 12 years. Handedness: Left. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Dermatologic-Connective Tissue; Gastrointestinal; Renal-Genitourinary; Allergies or Drug Sensitivities; Smoking; Malignancy. MMSE: 28.0. MoCA: 19.0. Logical Memory: 3.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The data shows profound ventricular enlargement (Z-score 5.32) and moderate whole-brain enlargement, but hippocampal volume is within normal limits (Z-score -0.71). The MMSE (28/30) is normal, but the MoCA (19/30) suggests cognitive impairment, which is inconsistent with the MMSE. The absence of APOE4 reduces genetic risk.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (due to conflicting MMSE/MoCA scores, but ventricular enlargement and MoCA suggest impairment)",
  "timestamp": "2025-07-26T01:40:42.399823"
}