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Table 5 Comparison of aberrations between US and MRI grades and surgical grades

From: A novel ultrasound scanning approach for evaluating femoral cartilage defects of the knee: comparison with routine magnetic resonance imaging

  Modality US radiologist 1 US radiologist 2 MRI
Undergrading 2–4 grades 29 (14.9) 14 (7.2) 19 (9.8)
1 grade 18 (9.2) 12 (6.1) 14 (7.2)
Identical grading 126 (64.6) 132 (67.7) 144 (73.8)
Overgrading 1 grade 12 (6.2) 13 (6.7) 9 (4.6)
2–4 grades 10 (5.1) 24 (12.3) 9 (4.6)
  1. Data are the number of defects. Values in parentheses are percentages