{
  "ptid_time": "016_S_1326_2008-10-14",
  "img_path": "/data/qiuhui/data/adni/images/016_S_1326/2008-10-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 57,078 mm³, 90.1% above the reference mean. With a Z-score of 2.14 (98.4th percentile), this represents significant enlargement; whole brain volume measures 1,136,880 mm³, 0.2% above the reference mean. With a Z-score of 0.03 (51.2th percentile), this represents normal volume . ",
  "text_data": "Age is 67.8 years. Gender is Male. Education: 18 years. MMSE: 28.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is significantly enlarged (90.1% above reference, Z-score 2.14), suggesting atrophy, while whole brain volume is normal. The MMSE score of 28 is within the normal range, and APOE4 status (heterozygous) is a moderate risk factor.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (Structural changes suggest neurodegeneration, but cognitive performance remains intact, warranting monitoring for progression.)",
  "timestamp": "2025-07-26T00:18:59.780283"
}