{
  "ptid_time": "020_S_5203_2019-10-17",
  "img_path": "/data/qiuhui/data/adni/images/020_S_5203/2019-10-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 47,083 mm³, 67.7% above the reference mean. With a Z-score of 1.55 (94.0th percentile), this represents moderate enlargement; whole brain volume measures 1,078,060 mm³, 10.6% above the reference mean. With a Z-score of 1.34 (90.9th percentile), this represents mild enlargement. ",
  "text_data": "Age is 73.0 years. Gender is Female. Education: 19 years. MMSE: 29.0. MoCA: 30.0. Logical Memory: 19.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.14 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The ventricular volume is moderately enlarged (67.7% above reference mean, Z-score 1.55), which can indicate atrophy, but the whole brain volume is mildly enlarged (10.6% above reference mean, Z-score 1.34), suggesting no significant global atrophy. Cognitive scores (MMSE 29, MoCA 30) are normal, and amyloid PET (AV45) is negative.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (ventricular enlargement raises some concern, but cognitive performance and amyloid status support normal cognition)",
  "timestamp": "2025-07-26T01:17:40.606956"
}